The model posted a series of lovey-dovey pictures of her man, along with the caption, "Love this man more than I could ever put into words, & am inspired by his drive to be and do better everyday".
Zayn and Gigi first began dating in November 2015 - in the weeks following her split from DNCE hitmaker Joe Jonas. "Your bravery in those times makes me proud, but your honesty last night proved what you're all about, being human..." These two! Happy birthday, Zayn! It's all very low-key and domestic for such a high-powered couple, and a shining example of what's become a social media ritual for friends and lovers alike: the Insta-expression of birthday adoration.