Niki as your enemy who secretly likes you

Niki and you have been famous around campus to be known as enemies, not enemies exactly but he just enjoys pissing you off but never did you ever expect to treat his wounds at 1 am in the morning.

One night you almost fell asleep before hearing the door bell ring, curious about who it could be you opened the door only to see an injured niki outside "I'm sorry I didn't know where else to go-" He says, clutching his stomach