On television, some co-stars played the perfect best friends, loving couples, or unforgettable partners. But behind the cameras, their real-life relationships were sometimes anything but friendly.

From bitter arguments and public insults to backstage confrontations and co-stars who refused to work together, television history is filled with surprising conflicts between actors who appeared inseparable on screen.

In this countdown, we're looking back at 37 iconic TV co-star pairings whose off-screen relationships became famous for all the wrong reasons. Discover the tension between Sarah Jessica Parker and Kim Cattrall on *Sex and the City*, the fallout between Will Smith and Janet Hubert on *The Fresh Prince of Bel-Air*, and the clashes involving Shannen Doherty on *Beverly Hills, 90210* and *Charmed*.

We'll also revisit the behind-the-scenes drama surrounding *The Golden Girls*, *Friends*, *Seinfeld*, *Moonlighting*, *Grey's Anatomy*, *Star Trek*, and many more beloved television shows.

Some disagreements became public feuds. Others were fueled by creative differences, workplace tension, or conflicting personalities. And in a few cases, former co-stars eventually reconciled.

These stories reveal a very different side of television history—and prove that even the most convincing on-screen chemistry doesn't always mean the actors get along in real life.

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