Krazy Kat (Comic Strip).

The story revolves around the title character and his/her (gender is never set, and strips often switch between the two, sometimes in the middle of one comic) obsessive love with the downright evil Ignatz Mouse, who hates Krazy and loves nothing more than to throw bricks at his/her head. Krazy being, well, crazy, takes this as a sign of love. In the meanwhile, Krazy Kat is actually loved by, of all things, a dog — Offissa Bull Pupp, a police officer who is ever vigilant of Krazy and makes it his life purpose to prevent Ignatz from throwing bricks at all, hauling him off to jail when he's caught in the act.

Relevant: Victim, Persecutor or Rescuer – Which Role Do You Play in the Drama Triangle?