What would you do if you were me?

Okay so there's my ex that I've dated for a long long long long time and like he wants to keep talking and hooking up to see if a connection comes up but I've realized that I really don't think that I love him but I'm not in love with him anymore and I'm not sure if that'll ever happen again. Then there's this guy that I've been friends with for a few years and we just clicked as friends because we have almost identical upbringings and we think the same and such but the thing is he's a druggie. And like he rarely keeps up with our plans and if I call him he'll be like call me back in five because he knows he won't remember. It's just been really frustrating with him lately because he's not eating yet he's still doing drugs and I don't know if he's not talking to me anymore because he's too busy smoking and such, doesn't wanna talk to me, or if he really is forgetting things. I don't know it's just like every single break up and everything single frienship crisis pretty much anything and everything he's always been there. The thing is I like him a hell of a lot but I'm not sure he feels the same way but maybe that's why he's been distant because he doesn't wanna care about me because it complicates things and he doesn't want a relationship or to get hurt? I don't know if you were me which one would you go with?