Justin Bieber and his long time bestie Lil' Twist have reportedly called it quits on their friendship after a serious argument broke out over Twitter. While we're sad that Justin is having to deal with another loss in his life, we can only hope it's for the best.

There are a few other celebs, like Ariana Grande and Victoria Justice, who know exactly what Justin's going through. Click through to see more celeb who have ended friendships after getting into an argument, then let us know in the comments below which pair of besties you miss most.