Emma Roberts and Evan Peters have broken up.

The American Horror Story co-stars called off their engagement, according to multiple reports.

"They grew apart," a source told People. "They both had a lot of growing to do and it was better that they do it on their own."

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Emma, 24, and Evan, 28, began dating in 2012 after they met on the set of the indie flick Adult World. The couple appeared together again when Emma joined Evan on American Horror Story: Coven and American Horror Story: Freak Show. The two became engaged over the holidays in 2013.

It wasn't always smooth sailing for the kissing co-stars. In the summer of 2013, Emma was arrested in Montreal following a domestic dispute that left Evan with a bloody nose. No charges were filed, and the couple later explained to reporters that it was simply a "misunderstanding."

It's unclear when the two officially split, however, E! News reports that Emma has not been photographed wearing her engagement ring "for some time."

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Both Emma and Evan have plenty on their plates to distract them from the break-up blues. Emma is part of the star-studded cast of Ryan Murphy's new Fox series Scream Queens, which premieres this fall, and she just finished shooting the movie Nerve with Dave Franco. Evan is busy filming X-Men Apocalypse and will begin shooting American Horror Story: Hotel shortly.