Any yaoi with either the uke or seme being way to nice or does stuff for one of the other and the other starts getting tired of their Shit so they leave and then either the uke or seme notice they can't live without them or something like that .
Oh i have a lot of those here http://www.mangago.me/home/mangalist/62481/ in my "your late bitch" list. I see quite a number of those lover exploiting the other one's goodwill and got tired of it. A good premise for a story tho.
Looking for a manhwa where the bottom has a friend or roommate and they open his package and it has toys in it so the top wants to try them with the bottom.