My dad died & me & my sister had to organise the sale of the house, so we spent a few days together. We're both married but there's always been alot of sexual tension between us.

We were having a hug one afternoon which turned into a gentle kiss, then a passionate one! I knew I had to have her there & then so led her up to the bedroom where we stripped in a bit of a frenzy. As I sat on the bed, my generously-sized cock rock hard, I noticed how wet & swollen her cunt was as she bent down to whip off her panties. She straddled me, easing herself onto my cock & I started screwing her, slowly at first, then harder & faster, the heady stench of sweat & sex thick in the air. As I felt her coming, I shot my hot load deep inside her, both of us grunting like animals. As she climbed off me to shower, she told me though it was the best fuck she'd ever had, as I was her brother it must never happen agaain. I'm not so sure!!