Win him back

A while ago I broke up with my ex. He was really upset and so was I but at that moment of time we had to be away from each other. It’s been about a month now but 2 weeks of no contact and I’m seeing him tonight and I miss him a lot and I want to try and see if we can try again since we are both in a better headspace now. I don’t know what I should say because I really do miss everything about him and now amazing he was.