I think the reason for your broke up with your ex is just that he didn't love you as much as you did or as much as you want and you don't want to bear it.
If you can bear it, you will live with him, if you don't want to bear it,you will leave him and find someone else to marry with , and your ex won't beg you to stay.

To marry with someone you love more or someone who loves you more is a problem

好伤感的故事啊！
盛夏的果实。。。