maddy and olivia
Maddy and Olivia are like best friends for life. No one can break them up, not even if they move to different planets. People just get pissy because they can't be best friends like them.
Maddy: "I'll beat you up if you try to steal Olivia."
Olivia: "If they try to split us, I'll throw a pizza at them."
Their enemy: "Why can't I be best friends with both of them?"