I’m in the same boat. My ex was already talking to someone in our final months which is why I threw in the towel and she immediately when to him after. We talked for another month and things got much worse and I couldn’t take it anymore so I finally stopped reaching out. Still miss her, still wish we could talk, still wish she’d come over for sex, but most of all, I cannot wait until I don’t think about her anymore. I know it’s going to take years.