is there any yaoi where the couple hates each other, or is currently fighting but they hav...

You can look for shizuo x izaya doujinshi s if you want
Thats whats in my mind rn
And i'd like to know some too ╮(￣▽￣)╭

http://www.mangago.me/read-manga/junketsu_drop/ Try this!

http://www.mangago.me/people/tag/170865/rival/
not all of them may fit ur description, but something similar

thanks everyone! i'll give these a look :)