seme didn’t treat uke rightuke leaves himseme regrets it
there's like 50% of that here but start with the season 2 of Banana Scandal if you want a toxic couple, that fits the description. BJ Alex is like that too but it has an easy going plot that you will like.
https://www.mangago.zone/read-manga/cosmic_boy/
-Hina wa Mitsuiro no Koi ni Torawareru- the 10 years when i love you the most- Life: Senjou no bokura
seme didn’t treat uke right
uke leaves him
seme regrets it