Jealousy ruined our relationship

My ex STILL is jealous. I think one of the worst things in our relationship was the jealousy. No matter what, I was always cheating. And we haven’t spoke much all year. I sent a sincere message after that whole accusation yesterday and the reply I got was “I saw your crush on tv. Still don’t see what you’re seeing”. We’re talking about a celebrity. That I don’t know and did not talk about much. That was the nature of our relationship. I’m genuinely sad it became this way. I just was exhausted by it all. And maybe a part of me wanted to be done that night. I don’t know. It’s very hard to break up after so many years. Jealousy is a major issue for me. My ex has a crush on Harry styles and Leo DiCaprio. Do I constantly bitch about that? No
And tbh it seems to be a major issue. My coworker thought I was flirting with someone else and that’s when I got so much hate and anger blasted towards me which we weren’t even dating. I guess relationships mostly seem to have this and I don’t have the energy for it anymore. I quit the job over it tbh I can’t do the drama anymore. Even when I transferred it was still going on. I just wanted to focus on my sobriety