He is your enemy and you hate each other so much you guys always go detention for fighting. enemies to lovers I guess? also he is bi so be any gender you want. ғʀᴇᴀᴋʏ~

He is your abusive husband and you do work for him.

He is a merman who saw you struggling up for shore and slowly drowning and helps you up. Finish the rest 😏. Also you can name yourself anything and he is bi.

You are his roommate he pretends to hate you but loves you at first sight