please give me recommendations where they start off as enemies or keeps fighting and shit ...

"The Story About You x Me" it's a manhua shounen ai but its honestly so amazing

Therapy Game
http://www.mangago.zone/read-manga/therapy_game/
But before you read therapy game, I would read the story that it’s a spin off to. (But not required)
http://www.mangago.zone/read-manga/xxx_allergy/
Allergy’s sequel
http://www.mangago.zone/read-manga/secret_xxx/

ty <3

wah tyy