Please, how can I get over my ex

I feel like I put everything I had into these past 6 months. It's been a month since we broke up. I keep replaying moments where I could have acted differently and how I could get him back. He was ambiguous in many ways. We loved each other very much, but he doesn't see us as a long-term relationship or that we're compatible. When, to me, our relationship was perfect, and to many people (friends, family) around us it was too. I can't understand why. I started smoking more and, honestly, nothing (really nothing) comes remotely close in terms of pleasure and how much I enjoyed being with him. Six months of effort, vulnerability, love. I can't see myself doing that again, putting in so much effort and opening myself again, loving that much again. I still only can jerkoff thinking about him, ITS FUCKING CRUEL AND BRUTAL. I wondered if MDMA, mushrooms, or antidepressants could somehow change my state. I feel very alone and I don't see light at the end of the tunnel. It doesn't seem like overcoming it, but just trying to ignore/forget what happened while I work, fuck myself with cigs, alcohol n weed, and watch TV or football

Fucking life. My life is great, I feel professionally accomplished and in all areas, I am handsome (we were). But I had the best 6 months in my life and now its gone... It was beautiful, damn... Maybe I should buy virtual reality or trying to go to an alternate reality, lol