Stepsis Wanted To Surprise Her Boyfriend For Valentine's Day But I Fucked Her Tight Pussy First

My boyfriend made me a great surprise and I want to surprise him too. I found out he's a virgin, so I decide to let him fuck me on Valentine's Day. But my stepbrother eavesdrops my phone conversation with my bestie and says he will tell everything to parents if I don't let him fuck me too! He also is a virgin. I'm so angry but I agree to keep it a secret. I suck his cock, then he fucks me roughly in doggy style and missionary till he cums on my beautiful pussy.