1. Root/Shaw
    like root always had an open crush on shaw but shaw "hated" (or at least was annoyed by) root at first
  2. Annalise/Eve
    this counts because Eve said "I hate you so much" to Annalise in her first episode even though she obviously didn't mean it
  3. Karen/Ivy (from Smash)
    they were always in competition with each other and kinda mean to each other but they DEFINITELY loved each other
  4. Rachel/Quinn
    they don't really hate each other but their relationship is hostile enough sometimes for it to count