All the messiest celebrity best friend breakups: What went wrong?

Amid all the Hollywood fakery, it's always nice to see stars maintain real, genuine friendships.

Examples, you say? Of course. Whenever "Friends" alums Jennifer Aniston and Courteney Cox hang out, Instagram has a field day. Same goes for Taylor Swift and Gigi Hadid — weirdly enough, they've weathered a lot over the years and have still stayed tight.

But just like the rest of us, celebrities often suffer best friend breakups. From husband-stealing to career envy and everything in-between, these stars' friendships came to an abrupt halt. And while there's hope that some of them rediscover their affection (come on, Selena and Demi), for most, the damage is just too deep. Take a look:

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