There are some stories like that but I can't think on any good ones. The Ex-ML in those stories always ends up as a lying ass, ugly ass cheater and we can't have that.
But I'll just throw this in here. It's not EXACTLY what you're looking for, but it's pretty good at what it does.
https://www.mangago.me/read-manga/10_years_where_i_loved_you_the......
