Afterparty Cheating: Sister’s BF Temptation

So I’m still processing what went down at that afterparty, and honestly, afterparty cheating has a whole new meaning for me now because my sister’s boyfriend and I ended up tangled together in the spare bedroom while everyone else was wasted in the other room. It started with this lingering look he gave me, and then his hand found my thigh under the table, and I just froze but didn’t pull away. Next thing I know, we’re sneaking off, and the second the door clicked shut, he was on me—it was urgent and sloppy, like we both knew we shouldn’t be doing it, which made it hotter. I climbed on top to set the pace, riding him slow at first because I wanted to feel every inch, but then he flipped me over and took me from behind, hard and fast, while I pressed my face into the mattress to muffle my moans. The risk of my sister walking in kept my heart racing the whole time, and I’ve never come that quick in my life.