My Step-Brother Catches Me Getting Tag Teamed and Wants HIS OWN TURN

My step-brother and I went to college at about the same time. He joined a fraternity, and I decided that I'd rather have an apartment. It works out really well, because I can just go to all the parties his frat throws whenever I want. He even gave me a key to his room just in case I need to stay over. Well, last night, I ended up using his room for something else. There were two French foreign exchange students at his party, and well, I let them BOTH fuck me raw. Apparently my step-brother had to grab something from his room, and when he came in, saw what was going on. I didn't even notice him there, but he was there long enough to take a very incriminating picture of what was happening! The next day, I am feeling rough, and he comes over to my apartment to “check on me.” It doesn't take long before he was holding the photo over my head and saying he will show everyone (including our step-parents) if I don't fuck him! Not only that, but once I actually agreed, he saw that I had a bush. He called me all sorts of names, and then made me shave it off before he'd even LET ME FUCK HIM. He is such a fucking asshole. I didn't even think he was serious, but once I am done shaving; there he is with a hard cock waiting. Fuck it, I can't risk him showing anyone. So I suck his cock, ride him reverse, and then let him bend me over until he cums all over my ass.