I need advice

Please try to give actual advice besides a simple "move on." Because in my case, that's not working. Well anyways, I've been in a relationship for over two years. He treated me great the first year and a half but ever since last year things went downhill. We've just been on and off in our relationship. (Still talking in between) But in the beginning he would smoke weed but after awhile he stopped. I drink every once in awhile but that's it. Well anyways since the end of last year he was on meth and dope for about three months. He hid it from me, lied so many times. Finally admitted it a few weeks ago. Said he would stop for me. I broke up wih him again because we had a date night to go out and he bought ecstacy. We rarely go out so i was pissed because why can't we have fun being sober? We had a talk before this that i needed him to be done wih drugs. I said or else I'd be done. Well now here he is trying to get me back with him. I give him chance after chance to try and prove to me that he's the man i thought he was. He used to work, and do things to make me happy. Now he just looks really bad. And I'm still suspicious that he's using. He just wasn't committed. He'd ignore my text messages every once in awhile, pretty much go out and do what he wants all week (not telling me where hes at, whos hes with, etc). The only things he's lied to me about is porn in the past and drugs. He's never cheated. But that doesn't make it better. My problem is, that i can't move on. I know i deserve better. But every time it's like I'm going back to the same problems and the same hurt. I still love him i just don't particularly like him anymore. I guess i just hold on to hope. Truth is, i have no support system. I have no friends. Idk what to do.