I don't know what to do with myself.... HELP?

Last night I partied with my three best friends, two are girls and one is a gay guy. I made out with all of them, and I feel like absolutely **** about it. I have the best boyfriend in the world and I have guilt eating away at me. Even though it was all strictly platonic, I feel like I am worthless and don't deserve him. I want to tell him but he is the extreme jealous type and would probably hit my friend Brian. Brian is VERY ... not straight. But still. I'm trying to find a way to deal with it and I just.. don't know what to do with myself. There is no interest there at all, but I still do feel like I cheated. It was ALL STRICTLY PLATONIC, but I know he doesn't like me kissing even my friends when I'm drunk. What do I do?