How Do I keep Falling For This Ass?

One of my friends, who i've known since the 2nd half of 7th grade (im in 9th grade now, do the math) is an amazing awesome guy(i'll call him billy). we've gone ut 3 tmes. all before my 8h grade year. AND I CANTSTOP LIKEING HIM! he is a complete dick sometimes. If someing is wrong is his life, he takes it out on me. He will randomly ignore me for months at a time for NO REASON, then pretends like nothing happened. And yet, i keep falling for him. I would DO ANYTHING for him. He's one of my best friends, I tell him everything. Only problem is itsa one sided friendship. He is only there for me when he has nothing else to do. He only texts me when he's bored and has NOTHING else to do. i've had boy friends since them, but i keep breaking up with them, because i realize i still like this guy, and i dont want to be mean to the boyfriends.

A month or so ago, i thought i was FINALLY over him and so now im going out with a really sweet guy who likes me a lot. Recently, i've been questioning if i like the guy im going out with anymore. and i think i might be falling for the first guy, billy, again. But everytime i say i like him, he says he likes me too. then we make out and shit like that, then i ask him if we're gonna go out. and he says he doesnt think we'll work. and sometimes he just uses me. I know hes a complete asshole, but i keep falling for him, even though i dont want to.

I never know what he's truely thinking because he's one of those guys that hide their feelings from everyone because they think being sad or upset is wimpy ( i hate when they think that).

I'm completely confused. And i cant talk to any of my friends or anything because they hate him and wont even listen to what i have to say. I dontknow what to do. i need advice!