Prom Dress

When I met the girl who was to become my girlfriend, and eventually my wife, she was only 18, and I was 22. She was around 5’5, brunette hair, slim but curvy, with brown eyes and a 32e chest that blew me away every time. It started as a summer thing, and although we were together for 3 months before we actually had sex, you could not stop us once we started. We did it in her moms’ house, in the garden, in the car, in the shed, on the beach, even while everyone was asleep at her home. I often looked at her mother and thought, if she grows up to be as hot as her, then I will be a lucky man. However, this is not about her mother. Or my girl…

Her sister Beth was around 12 when Lucy and I got together, and she was in my eyes, a standard little sister. Cute to me, as I was new, but a little brat I knew for certain. Nothing else really crossed my mind.

Occasionally, Beth would disturb us midway through some sneaky sex session. Once Beth knocked and quickly came in to Lucy’s room, while I was receiving my first blow job from Lucy. I struggled to get my cock out Lucy’s mouth before Beth jumped on the bed, where I was trying to hide my erection under the covers. That gave me a thrill of a thought. And I was sure she knew what was happening.

As Beth started to grow up, about 14 or so, I noticed her getting more puppy fat on her, and this was a startling discovery. She had been a skinny little ballet dancer before, but now had some curves developing around her sexy thighs and luscious hips, and far more in the chest area too. When I arrived at Lucy’s place one day, and discovered Beth in her leotard, that was I first realized that she was going to turn into a hot little sister. My cock noticed it too. I struggled not to stare or seem horny, but I was….very! She started to wear more fashionable tops, and her chest seemed to be growing without restraint. At one point, she must have been only a few sizes off her sisters. I would always be distracted at dinner.

At about the same time, Lucy started to do less running, less exercise and more eating, and consequently, she started to put on more. I do like my women curvy, that’s a cert, but she was changing from the girl I met, from the curves I liked, and I started to think; now I wish she was more like Beth. Our sex life started to suffer, but was still good when it was happening. It just got less adventurous. Fewer positions, only the bedroom, and no oral anymore – either way. Fantasies of Beth filled my day, night and thoughts during sex. Imagining it was Beth that I was sliding in and out of would always bring the strongest orgasms for me.

My relationship with Beth started to become more friendly and playful, as I became the fun older guy in her life, and she had really started to get my attention. Typical young girl, she became a little emo style and wore tops and skirts. I was hooked. We would talk about music, and I would ask her about her school and her friends, feigning attention on others more than her. Secretly I was taking every opportunity to study her body closer.
‘Leon, can you hand me that poetry book over there?’ Beth asked innocently.
She was leaning over the table pointing, while her top allowed a view of what had been starting to flood my dreams and fantasies. I handed it to her, and asked
‘What you writing?’
‘Just a few lines about what I am feeling like these days, maybe for a poem, perhaps a song’ she smiled at me, and slowly stood back up, her hands brushing down the back of her chequered school skirt. I realized she was caressing her pert little ass and smiled.
‘I would love to take a read sometime, if you would let me – I promise I won’t take the mick too much…’ I joked. As I was a private music tutor, she knew I meant it, but liked the playful nature.
‘I think you would be…..blown away’ she stated, smiling, and tuning quick enough to give her skirt a twirl, and me a glimpse of her golden thighs. From then on I kept an eye on this blossoming babe.

It was hell that year and a bit, seeing her grow and develop, pretending that I felt nothing but normal feelings for my girls little sister, and knowing I wanted her more than air. Her hugs would get me hard in seconds, feeling that hot little body, and soft amazing chest against mine. Little flirty tickle fights that led to nothing more than a frown and a ‘Stop or I will tell Lucy’. She didn’t seem to have an interest in boys, and in fact seemed to think that sex even was dirty. One day after having sex with Lucy in the room next to hers, I came down to breakfast with Beth staring at me with those piercing hazel eyes.
‘I heard you two going at it last night while I was in bed……I was like ewwww…its wrong!’
‘I’m sorry, I er…..will try and be more quiet next time’ I said, genuinely sorry, a little red in the face, but pleased she knew that me and her sister had a good time.
‘Not your fault, it wasn’t you I was hearing…it was Lucy’ she replied, with a half smile, half frown and looked down at the table.
It was at this point that I wondered, was there a hint of jealousy in that.