i don't know what to think, should i let him go

yes. you all are right.
i feel like he is still holding on to me and he won't tell me to move on because he wants me to hold on to him too. is it because he just doesn't want me to move on yet, is it a jealousy thing, or, he doesn't want me to be over him if he's not over me, or is there a chance he still thinks we can be together?
he told me his emotions and his thoughts are conflicted. he has deep feelings for me, but logic telling him to break things off. i tell him that i can move on if that's what i should do but i really need to hear that from him, because as i said, something in me will still hold on to him and well, he refuses to say that to me. i guess he doesn't want me to move on, and he keeps acting as if we're still together but then for example, i'll see him one evening and then a couple days later he he says things like: we shouldn't get back together, we're not right for each other, and so we don't talk for a couple weeks and i'm using this time to move on with my life and then he calls or texts and starts acting as we're together again and wants to see me and etc etc. and it all just comes right back.
i know that the best thing to do would be to just not respond next time he contacts me, to give him the message that it's over.
b/c he will keep doing this if i keep allowing it right?
and he's not going to suddenly decide that we should be together again, right?
at least not now. we should probably be apart for a while and let time show us if we belong together? i don't know. i feel that i should do that but i always cave in. actually i almost didn't respond when he made contact this last time, this weekend, but then i gave in. and he asked if he could see me again. i am proud of myself that i did refuse to see him, i told him i wanted to but that i didn't think it was the best idea, that i was afraid it would ruin my progress. i want him to decide what he wants from me, and he won't make a statement either way. i know he told me he can't be friends, and yet he doesn't think it's right we're together again, but he is still trying to be my boyfriend in his behavior, and he says that he has no intention of looking to be with anyone else (i guess that means, at least for now right? ). it's as if he wants us to be as we were before, and avoid all the seriousness of the future. but i can't go back with him that way because it was time to go forward or end it and he just wants to pause or something.