This is a print version of story How I fucked my sister's best friend! It's wierd what puberty can do for a man This a story I've wanted to share for a long time, since nobody knows about it as far as I know. My sister is 4 years older than me, so when I was still playing with video games and such at 12 and 13, her and her friends had already been fucking around with guys! Although, I was playing games, I had always had a hightened sexual awareness. My sister's best friend found most of my sexual attention.