I'm weaving a tangled web here with boys.. A little help?

Alrighty, I have been dating this guy for a while but he gets depressed all the time, I love him I do but it's depressing me, and it feels like were falling apart. Now where it gets crazy: I like Nick like crazy mostly because he's hot and I wanna get into his band. Ik it's wrong. There's also a man whore who keeps flirting with me.. Eh I guess he's irrelivant. Then there's jimmy who is totally attractive and nice, but he has a girlfriend. There's also my soon to be step dads son that I believe likes me and I kinda like him too he doesn't know I have a boyfriend though I think.. It's all weird. I don't wanna be selfish though but I think Im being selfish..