The characters in this story are aged 18.
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I'd heard my twin sister in the bunk below moaning. I had turned 18 just two weeks ago but actually so inexperienced with guys that I thought the guy was doing something bad to her. But the moaning didn't really sound like she was in any sort of distress, I had actually Google searched as it happened and realised why she was making those noises. I knew my sister was a virgin like me when she had walked in our room but I was quite sure she was having sex. As my sister was reaching what Wikipedia had informed me was an orgasm, l was surprised to feel my own cheeks burning hot and heat spreading down my chest. I didn't know if this was a twin connection but this was my first sexual experience - just the beginnings of arousal. Unfortunately the feeling disappeared just as my sister left the room with her boyfriend.
Curiosity was getting the better of me. Wanting to know what it actually felt like to be horny, I jumped down to the floor and pulled off my PJs, leaving my pink cotton briefs and bra on, As I looked at my freckled reflection in the long mirror in the corner of the room, I took a deep breath and pushed panties down a little to reveal the ginger hair covering my pussy. I squatted down to try and see the opening and began wondering how I had managed to get freckles right between my legs at the top of my thigh. I considered going back under my covers and touching myself with my fingers, wondering how I could get myself feeling hot again and realising I would probably have to Google for it! Just as I was about to climb to the top bunk, I heard a floorboard creak outside. I quickly pulled my panties back up and put my head around the bedroom door to see who was there.
He was on the landing outside my room and our eyes met and immediately I struggled to catch my breath, blood rushing to my freckled cheeks. He was my twins boyfriend and this was the first time I had seen his face. I think my brain and body were telling me that as twin sisters we found the same sort of guys hot. Just staring at the guy made that warmth in my cheeks and chest return and I felt quite giddy, however my shyness was overwhelming. I had no idea what to do or say.