zayngigigraziaImage: Gigi Hadid via Instagram

When Gigi Hadid and Zayn Malik were first linked in late 2015, many assumed they were just one of those Hollywood ‘couples’, in it for the publicity – he had his first solo album coming out, and she was fast becoming the It model of the moment.

Fast forward a year and it seems Gigi and Zayn are the real deal. She supported him through his battle with anxiety and an eating disorder, and they even broke up briefly – which any couple that has called time on their relationship for a while knows makes you stronger.

So it’s no wonder Hadid, 21, was feeling sentimental when the Pillowtalk singer turned 24 this week. Sharing a photo of the former One Direction member on Instagram, she added the caption:

“Happy birthday my handsome! so lucky to know and love a soul like yours. wishing you the best year ever!!!”

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Image: Gigi Hadid via Instagram

Taylor Swift – Gigi’s close friend and Zayn’s collaborator on the Fifty Shades Darker theme song I Don’t Wanna Live Forever – also paid tribute to Zayn on his birthday, wishing him a “HAPPY Z DAY” on Instagram.

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Taylor’s birthday shout-outs are an honour usually reserved for her closest gal pals. Looks like Zayn’s scored a spot in the squad.