Malik and Hadid's breakup came as a shock to fans.

"Being in a serious relationship just wasn't practical" for the two, a source had told E! News. 

"They were just going in different directions," another source said. "Her job requires her to be in the public eye—the more she's out there, the more she shares, the more work she gets."

"Toward the end it just wasn't meshing like it used to," the insider added. "There weren't big arguments, but there was frustration on both sides."

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