Responses
(Not cheats but thinks about another person and they break up)
http://www.mangago.zone/read-manga/egoism_tim_alchem/
It’s super depressing but fits your requirement:
http://www.mangago.zone/read-manga/10_years_where_i_loved_you_the_most/
http://www.mangago.zone/read-manga/doronuma/ this is what first came to my mind, it’s about cheating and it’s also very very painful but it has a good ending ( ̄▽ ̄)
Hello, does anyone know any yaoi where MC gets cheated on and he ACTUALLY breaks up with them and not get back, and give second chances. Then the cheater gets what he deserves , and the MC finds someone new who will treat him right and love each other equally and unconditionally?