People in a love/hate relationship?

• Ones with love-hate relationships, say
• Allies who are also rivals
• Besties who also literally hate each other's guts but we're besties but we hate each other so much it hurts sometimes
• Portmanteau for partners who are also competitors

Wiktionary Word definitions in Wiktionary
alt. (plural of frenemy English) n. (plural of frenemy English)

Wikipedia Word definitions in Wikipedia
" Frenemies " is the ninth episode and spring premiere of the fifth season of the American musical television series Glee , and the ninety-seventh episode overall. Written by Ned Martel and directed by Bradley Buecker, it aired on Fox in the United States ...