The singer, 23, and model, 21, have ended their relationship of seven months, E! News confirmed Thursday.
Sources said the couple had a rocky relationship and have previously broken up and got back together before.
They were fighting at Gigi's birthday celebrations in April, and have previously 'broken up and got back together a few times,' a source told E!.
But the couple may yet reconcile, another source added.
'Zayn and Gigi did break up, but they can likely get back together tomorrow. It's all very unclear what's going on between them now,' one insider said.
'They been having some issues lately that involved communication and getting along.'
We wonder if any jealousy has played a part?
Awkward about the music video then....