I need a manga/anime with a love-hate relationship...

I Любовь Lovely Complex :3

But probably Akane and Ranma from Ranma 1/2

Ouran highschool
fruits basket
naruto
bleach

Special a, most of the couples in this

Well... A love-hate relationship is where a character hates another, but the one they hate secretly loves them, right? Хеталия might count. Russia and China have a sort of love-hate thing going on. Russia seems to really like China, and China is just scared of him. Same with America and England. America still seems a bit attached to England, but England takes every opporatunity to call him a fatass или an idiot. I dunno, though...