One of the most interesting and erotic relationships I have ever had occurred while I was living in Washington some years ago. Sara was 29 and separated from her husband when I met her, about the same age as me, and very shy and attractive. After I had known her for a few months, and had begun seeing her socially after work, I discovered that Sara was bisexual. She even kept a photo of her girlfriend on her desk, although I'm pretty sure no one else knew who she was.

Now although I didn't understand the full details for quite some time, it unfolded that Sara and Tammy had a very unusual relationship to say the least. Despite the fact they were living together, it seemed they were still free to pursue relationships with others, of both sexes, and even to bring them home. At 23, Tammy was somewhat younger, and as I was to discover, used their slight age difference to maximum advantage. It turned out they even slept in separate rooms, and only occasionally shared each others bed. All this just served to make Sara more fascinating and desirable to me, but the most amazing revelations were still to come.

One day Sara mentioned to me that her divorce had been finalized. This was rather good news for me because I really wanted to get a date with her. I waited for a week or so and then asked her out for dinner. She accepted, and I when I picked her up the next Friday evening, I got a chance to meet Tammy who looked even better than her picture. Tammy was very petite, about 5' 4" tall and couldn't have weighed more than 90 pounds. She had brown eyes and long blond hair which she kept in a ponytail. She was kind of a little pixie and reminded me a lot of my cousin. Her breasts were very small, firm and pointed and I noticed her nipples were visible through her tee shirt

Anyway, Sara and I went out for dinner and got to know each other a lot better. She seemed to feel at ease with me and started telling me a little about the problems with her husband that led to their divorce. She did not get into the details and I didn't want to pry but she said her husband was a very straight laced prude and that he divorced her because he thought she was becoming, as he put it, 'sexually perverted' (which made her seem even more interesting and mysterious to me!). We got back to her apartment rather late in the evening but I dropped the hint that maybe we could have a cup of coffee or something before calling it a night. She was a little hesitant at first but then invited me in. Tammy was still up watching TV and while we were having coffee, she came into the kitchen and whispered something in Sara’s ear. Sara excused herself and said she would be right back. I think she was gone about 15 minutes and when she came back into the kitchen I thought I recognized a familiar scent, and I wondered if she had excused herself so the two of them could make love. Well if that's what it was, I was a little disappointed to say the least! In fact all I got that night was a goodnight kiss, but it was a start.

Despite that we were soon dating and having sex (at my place) on a fairly regular basis but she never wanted to stay overnight because she didn't want to leave Tammy alone all night by herself. When I suggested that maybe I could stay overnight at her place, she put me off with the somewhat lame excuse that it wouldn't look right in front of Tammy. I did appreciate that Tammy might be jealous of me, but Sara reassured me that wasn't the problem. In fact she even went so far as to admit that Tammy and her had shared lovers on occasion, and that the problem had more to do with Tammy needing her 'privacy' until she was more comfortable with me. Once again, I became even more intrigued.

She tried to explain that Tammy was younger and needed 'looking after' in certain ways. I thought it was nice they had such a close relationship, but did find it strange that she found it necessary to disappear for 15 minutes every night, apparently to put Tammy to bed. One clue that could have tipped me off is that sometimes Tammy would absentmindedly put her thumb in her mouth. She would do this sometimes while watching TV and it was not unusual to find her dozing on the sofa and sucking her thumb when Sara and I returned from an evening out.

One evening, after putting Tammy to bed, Sara surprised me by asking me if had ever noticed anything unusual about Tammy. I said I hadn't other than the fact that she sucked her thumb and that sometimes she seemed rather immature for her age. Sara seemed to grasp my remark as an opportunity to elaborate on what she called 'certain deficits' in Tammy’s development. She went on to tell me at first in very general terms, about Tammy’s need to hang on to certain trappings of childhood and asked me if I felt it was wrong for her to allow or even encourage such behavior. I told her that she seemed to have such a great relationship with Tammy that whatever she was doing must be right.

Then one Friday evening, while Sara was putting Tammy to bed, the phone rang in the kitchen. I was sitting right next to it so I picked it up. It was Sara’s sister Debbie and I told her to hold while I checked to see if Sara could come to the phone. I went down the hall to Tammy’s bedroom and found the door slightly ajar. I knocked on the door which pushed it open even more and when I peeked in I got the surprise of my fife. Tammy was laying on the bed on her back with her nightie pulled up around her waist and with her legs spread wide apart. Sara was between me and Tammy’s pussy so I didn't see that, but it was obvious that she was putting Tammy into a diaper. Sara turned just as I said 'Excuse me. It's your sister on the phone.' Sara looked at me speechless for a moment and then stammered 'tell her I'll call her right back.'

By the time I was back in the kitchen, my penis was rock hard. 'My God,' I thought, 'have I discovered a gold mine?' I gave the message to Debbie and she said to tell Sara to call tomorrow as she was getting ready for bed. Sara came back into the kitchen a few minutes later obviously embarrassed. Her first words to me were, 'She wets. She wets her bed almost every night so she needs to be diapered. That's what I meant when I said she was like a little girl in some ways.' I started to ask if it was a physical problem and she said 'No. It's just she is a deep sleeper and she wets herself, and I guess this sounds terrible, but I get a lot of fulfillment out of it too. Do you think it's weird for me to feel that way?' I asked her if this had anything to do with her husband leaving her and she said that her husband thought it was perverted for her to get turned on by the idea of other women in diapers. I told her that I didn't see anything wrong with her feeling that way and that as far as I was concerned, it was all very erotic to me. When she saw the bulge in my jeans, she laughed with relief and said 'Oh god, that's so wonderful. I was so worried that you would disapprove of us.'

An immediate benefit of this disclosure was that she invited me to stay overnight We had great sex that night and the next morning I got up before anyone else and took a shower and shaved using her pink Lady Gillette razor. Sara got up while I was in the shower and made some coffee. Later as we were sitting in the kitchen drinking coffee, she told me she had to go into Tammy’s room and change her. I had expected this and had decided before that I would ask Sara if I could come along and watch. I was rather nervous about asking and my voice was noticeably husky when I said 'Is there any chance that I could come in and watch?' Sara kind of made a face and said 'I don't know. I guess it's okay with me if it's okay with Tammy. It's up to her. I'll go and ask.' She was gone for what seemed like a long time and I could hear them talking but not what they were saying. I expected bad news but Sara came back into the kitchen and said 'Come on. She says it's okay.' As we approached Tammy’s bedroom, Sara stopped me and whispered in my ear 'You realize how privileged you are don't you? I think she must fancy you!'

My heart was almost beating out of my chest in anticipation of what I was about to witness. I followed Sara  down to the bedroom and found Tammy lying on her back under the covers. Next to the bed on the night stand was baby powder and some towels. While Sara went into the bathroom to get a washcloth, I tried to make small talk with Tammy - She avoided eye contact with me obviously out of embarrassment I told her not to feel inhibited by my presence and just to do what she would normally do if I were not there. Sara came back into the room and put the washcloth on the nightstand and pulled the covers back. Tammy’s nightie had worked it's way up to about mid thigh and I noticed, I guess for the first time, what beautiful legs she had.

Sara said 'Whenever you're ready honey.' Tammy lifted her hips and slowly pulled her nightie up to her waist totally exposing the plastic pants and diapers. Through the transparent plastic, I could clearly see the yellow stain in the white diaper. Sara pulled the plastic pants down as Tammy again lifted her hips and legs. The smell of her pee was like an aphrodisiac. Tammy then pulled her knees up and opened them slightly while Sara unpinned the diaper. Sara pulled the front of the diaper away and then out from under Tammy’s bottom. I caught a quick glimpse of Tammy’s pussy before she put her legs together, her act of modesty being only partially successful. What was remarkable was that she had no pubic hair.

Sara read my mind and said 'She shaves herself down there - she says it feels more comfortable when she's wet!' and then to Tammy 'Turn over honey so I can take care of your bottom.' Tammy rolled over to reveal her firm little ass that was rather pink from the irritation of sleeping in her own pee. Sara washed and dried her ass and then sprinkled baby powder liberally all over it before gently spreading it around with her hand. Tammy then rolled over on her back again and then with some coaxing from Sara, spread her legs. At this point, my penis was like a rock and it was all I could do to keep my hand away

Tammy had lost all of her inhibitions by this time and had begun sucking her thumb while Sara carefully washed and dried her pussy and tummy. She sprinkled powder from the can directly on Tammy’s tummy, inner thighs and pussy and then very gently began to spread it around with her fingertips. She started on Tammy’s tummy and slowly worked her way down as though teasing her. When she was almost to Tammy’s pussy, she shifted her attention to her inner thighs and again seemed to be teasing her as she moved closer and closer but never touching her. Tammy squirmed impatiently and spread her legs even wider. Just as I was beginning to think that perhaps Sara considered that area off limits because I was there, she began to very lightly run her fingertips over the Tammy’s  mound and then finally down between her legs. She proceeded  to diaper Tammy first sliding a clean diaper under her bottom and then pinning each side then Sara turned to me and asked if I would do her a favor and go to the top drawer of the dresser and hand me a clean pair of plastic pants so I opened the drawer and was amazed by the assortment of plastic pants I then grabbed a white one and started to hand it to her Sara said put that one back and give her the pink one with nursery print and side snaps so I did. Sara then placed the plastic pants on Tammy and snapped the sides closed and then tucked her diaper in. Then Sara sat on her bed and opened her nightgown and unhooked her bra Tammy laid  her head on Sara lap and began sucking on Sara boobs after about 20 minutes Tammy stopped and Sara told her what a good girl she was.  This seemed to complete the ritual and we left the room. Just before we went however, Tammy caught my eye and winked at me, at the same time glancing down at the bulge in my pants. I took Sara immediately into her bedroom and screwed her. She had obviously become very aroused by what she had just done with Tammy as she was very wet and wanted no 'warm-up' at all.

Later on that evening, Sara and I went out to see a movie while Tammy had gone out with some of her friends to see a different one. She got back shortly after we returned home. Sara must have been able to tell something was up from the look on Tammy’s face, as she immediately went over to her, picked up her dress and slipped her hand up between Tammy’s legs. Sara looked over at me and said, 'She's wet her pants. Have a look.' The entire seat of her panties and the back of her dress were soaked with her urine. She explained that as her girlfriend was driving her home, she had such a overwhelming urge to pee that the girl had to stop the car. Tammy got out and squatted down next to the car and peed through her panties and the back of her dress while her girlfriend watched. It was getting late and we were tired, so after Sara got Tammy into her diapers, we all went to bed at the same time.

The next morning, I was up early and Sara slept late. I had coffee in the kitchen and then looked into Tammy’s room to see if she was awake, but the first thing I noticed was her diapers and plastic pants in a little soggy heap beside her bed. She explained that she had become itchy from her wet diaper during the night and had changed into panties and her blue pajamas. Then she whispered, 'Just come in here a minute.'

She was lying on her back with the covers pulled up to her chest. I asked her what she wanted and she just laughed and said 'Just wait a second.'

She looked at me with a very mischievous expression on her face and said, 'See if you can guess what I'm doing.'

I said, 'You're playing with yourself.'

She stuck her tongue out at me and said, 'No I'm not playing with myself! Just wait a second.' Suddenly I heard the unmistakable hissing sound of pee gushing out under the sheets.

'I don't believe this,' I said to myself, 'She's peeing right in the bed.' I watched as an expression of bliss crept across her face and a smile formed on her lips.

After the hissing sound ceased she giggled and said to me, 'I just wet my bed. I just did a big pee right in my pajamas. Look,' and she threw the covers back.

The pale blue pajamas were stained with a smaller oval shaped dark wet stain around her pubic area that extended partway down her inner thighs. She said 'Look at this,' and rolled over to show me her behind. She had totally soaked most of the back of her pajamas down the backs of her thighs to her knees. The wet pajamas were clinging tightly to her bottom so I could see the outline of her bikini panties. I affectionately spanked her wet bottom and felt the warm wetness between her legs. I was so aroused from all of this that my only thought was to make love to her in her wet bed. I told her what I wanted to do, but she just sat there on her wet sheet biting her lower lip in mock shame.

I immediately took off my clothes and jumped into bed beside her. I kissed her a number of times and sucked her nipples while I massaged her pussy through the wet pajamas and panties. We were really only just getting started when to my horror I looked up and saw Sara standing in the doorway in her dressing gown. My immediate reaction was to clench my teeth and wait for the battle to begin, but her response caught me totally by surprise.

'Would I get the same treatment if I was to wet myself too?' she asked with a wicked smile. 'Sure,' I replied somewhat taken aback, 'But I didn't think ...'

'Well surely you didn't assume Tammy was the only naughty girl around here who still needed diapers,' she declared. 'But if I've gotta wet my pants to give you the hint, then so be it!'

At that point she let her dressing gown fall open to reveal a huge wet stain on the front of her nightie, and she wiggled her toes on the carpet to draw attention to the puddle around her feet. Tammy had obviously known what was coming, and had already moved over to make a space in the bed. Leaving her dressing gown on the wet carpet, Sara jumped into bed and gave us both a kiss.

The sight of my two big wet babies lying beside me was more than I could ever have hoped for, and as we began what would undoubtedly be the most erotic day of my life, I could only dream of the possibilities that lay ahead.