How can I move on from my ex boyfriend? Gay relationship

It has been nearly two years since I (23) last saw my ex boyfriend (22) in person. He was in the closet from an Indian family and never told his family about our short-lived relationship (four months). On my 22nd birthday in March 2017 he went back home from university and promised he'd see me before coming back in September 2017. I tried to end the relationship and find a new boyfriend but he insisted that he loved me and so I stopped focusing on other guys. During that summer he suddenly changed. The texts weren't as long. He didn't bother to call me. And he was uninterested in seeing me in person using his family and work as an excuse. I got angry at him and uploaded a photo of he and I holding hands and tagged his family members in the photo. He totally ghosted me and we never spoke again. In December 2017 later that year I reached out to him and he taunted me saying things like "I hope you can move on", "I'm so over you now", "I have a new boyfriend". To my surprise I found his Twitter account and a tweet mocking me saying "I got to tell my ex how amazing my new life is". I text him about the tweet and to my surprise he wouldn't stop calling me. I eventually picked up and he drunkenly admitted that he loved me and wanted me to come over to his university for "one last night of passion" (even though he had a boyfriend). After those phone calls he blocked me again. Cut to September 2018 and I discovered that he and his boyfriend got married after six months of dating (June 2018)! However, his homophobic parents didn't attend the wedding. I also discovered that his "husband" sent me a nude photo five days after their "marriage". I tried to contact my ex to tell him about the photo and warn him about his bareback-loving cheating husband. But instead my ex turned to Twitter and publicly shamed me, saying that I was abusive and victimized people and boasted about how his husband treats him with respect. I want to move on from this horrible story but I can't. I have been on many dates throughout this whole ordeal but I can't seem to find anyone who makes me feel as strongly about them as I do my ex. How can I move on from this?