Netorare, an entire Genre of Porn that is about getting cucked the set up to some of those stories are similar to some of the stories I've read here of what happened between men and there Exes

The links below provide a basic outline and analysis of Netorare, don't go down this rabbit hole Netorare is porn. To me this was a case of Art Imitates Life I just wanted to share it

https://tvtropes.org/pmwiki/pmwiki.php/Main/Netorare

https://tvtropes.org/pmwiki/pmwiki.php/Analysis/Netorare