I've always been insecure about the thought of him wanting to do threesomes or fucking other chicks but backstory is that I slept with someone once in a drunken high state and cried felt awful with remorse for weeks, but told him he could have a free pass since I cheated once. Anyway thats the backstory irl. 

Dreamt we were somehow at a convention or something with a lot of other people. Everythings getting hazy now don't remember much, he was chatting up a girl or two, skip forward to this second girl in bed with us. This girl is a skinnier smaller version of me, facially prettier probably also. He's fondling her while I'm watching, I cant take it, I go to the bathroom to pee, except my pee sprays fucking everywhere not in the toilet bowl but over the floor,  the walls, my legs. I come back and they are naked and sweaty like having just fucked. I call bf an idiot. He says I'm the idiot because he was making out with other girls earlier and I didnt say anything. Said I didn't even see it. Start banging my head against the wall screaming WAKE UP, WAKE UP repeatedly and I wake up irl. Thank fucking lord it was just a dream. But idk how I'll handle it if my boyfriend was ever around people his type that he'd be attracted to. I honestly don't know. I'm scared I'm going to go more mental than I already am. 