I think reevaluating how you attend to yourself is a good first step. Learning to let go of a lost love is a process. Rebuilding yourself back up to feeling good about yourself doesn't require doing more than devoting all this spent energy on him back onto yourself. I wouldn't even begin with a breaking up talk to be perfectly honest. I know that my choosing to divorce was a process. I reached a point where I threw my hands up. I had done everything that I could imagine to repair the wounds of my marriage. Turning the focus on me was necessary. Good self care would be my advice. When you're in a better place emotionally, you'll know if staying or leaving is the right choice for you. Nothing wrong with being someplace, in between.