6. You write him one last letter or email. One with all the feelings.
Solution: Unless the reason you broke up is because you never told him you loved him or he wanted to move in together and you didn’t (or some other big issue that you’re willing, now, to bend on), there’s no new piece of information you can give that’s going to change his mind. If you need to write the thing, write it, but burn it or eat it before you give it to him.