Please answer????

I was wit this guy for almost a year it was bad real bad. he's addicted to pot but i love him. he's kinda a liar and he'd lie so he could smoke weed. He was always choosing weeed over me so evntually i broke it off. Untill 2 months ago. i was lonely and started seeing him again. He was still smokin pot but i made myself believe things were better. He started goin bak to old habits and choosing weed over me. It hurt so i kinda stopped seeing him. now he wants me bak and im tryin not to give in but i miss him. please help me snap out of it!!!