How to move on

I need tips on how to move on. How to get over a break up. I was in this relationship for a year and seven months. I ended it even though i didn't want to. In our relationship I'd say we have been on and off for a few months. We fight, and break up. Stop talking for about a week and then we usually get back together and work things out. But this time I'm sure he's not interested in working things out. He's tired of the break up, make up and so am i. Because nothing ever changes. I'm just hurting so badly because i could never imagine my life without him. But as soon as we broke up this time he went out partying with his friends. I feel like that was the big issue, he wanted more freedom smoking weed. (Of course which i wasn't okay with.) But i just feel like if you really loved someone you wouldn't choose drugs over your relationship.....but anyways, sorry for the rant. Please comment on how i can move on. I know he's done with me this time because he got a new number and has me blocked. And hasn't tried to contact me. I just don't know what to do, i don't know how to cope😢