If you think love is this magical force that will overtake rationality…. life is not some Hollywood romcom experience. If it were, he would always just call you, or you’d rekindle the fire in some serendipitous meeting. If that’s the case, don’t do a thing and ‘love will find a way’ or whatever bullshit idiots want to believe.
If he doesn’t think the relationship was working/will work, even if things seemed to be going swell to you at the time of breakup, it is over. Hey, you know what doesn’t make a person look at things in a different light? Stalking. How do you know you’re stalking your ex you ask, women-who-can’t-take-no-for-an-answer? Well, if they broke up with you and have made zero contact… your unsolicited attention online, through text, phone calls, etc… that’s it. That’s stalking. Don’t do that.
The most you could hope for is that this person knows the relationship won’t last, but will settle for you in the meantime until things end up so bitter and twisted that you both want out the second time around. You need to realize he owes you nothing. The time you have spent together was not some investment that will pay dividends based on your entitlement level, and that people don’t sporadically change their minds or being on a whim.
If you miss the other person in a break up that means things ended on good terms. Don’t fuck that up. Just be glad you’re not calling divorce attorneys and fighting over who gets the kid.