My sister thinks she's better than me at everything. If I win one contest, she wins ten. If I decide to learn guitar, she's suddenly an expert overnight. The worst part? She's getting married before me - she stole my boyfriend from me! This was supposed to be my shining moment. But I've had enough, there's only one thing left I can still be better than her at -- fucking her husband to be. I know I can get my brother-in-law to fuck me, and knowing that it would make my sister mad makes it way hotter. My sister is a prude, so I knew that anything I let him do to me would have been something he had never done with her. It's okay, though. I promised him that we would never tell her. Fucking your sister-in-law doesn't count. It's just practice for his wedding night. And when her lips are around his cock, I bet he'll be thinking of me...
