he begged me not to go through with it but still watched [gf perspective]

he was quiet the whole car ride. i wore the dress he hated — the tight black one that shows just how soft my ass is when i walk away from him. he kept glancing over, jaw tight, hands clenched in his lap. i knew he wanted to say something but didn’t.
right before i got out he whispered, “please don’t let him cum in you.” i kissed his cheek and said, “you don’t get to ask that anymore.”
the other guy was already waiting upstairs. taller, cockier, rougher. kissed me like i belonged to him. ripped the dress off without even pretending to be gentle. i moaned so fucking loud when he slammed into me that i’m sure my boyfriend heard from outside.
he stayed in the car, watching the window. i knew because i looked back and saw the glow of his phone lighting up his face. i made sure to ride the other guy right in front of it, tits bouncing, his hands bruising my hips as he filled me.
after, i slipped back into the car without panties. his eyes dropped to my thighs. i leaned in close and whispered, “he didn’t just cum in me. i made him stay inside until it started dripping.”
he didn’t speak the whole drive home.