The 22-year-old former One Direction singer has been romantically linked to the 20-year-old catwalk superstar since November 2015, when photos emerged of the pair spending time together in Los Angeles.

Although they have not been spotted out in public with each other since November, it seems Zayn and Gigi are playing amorous games online, engaging in flirty exchanges through social media.

Over the weekend Gigi took to Instagram to share photo of a tattooed shirtless man holding her cat - with the markings identifying him as Zayn. Gigi did not add a caption and the head of the man in the photo was cropped out, but the tattoos on the subject's arms were clearly ones belonging to Zayn, including a checkerboard artwork on his forearm and a tiger on the bicep.

The flirting was also evident on New Year's Eve (31Dec15) when Gigi shared a photo of herself wearing a Bradford City football team shirt on social media. The item belongs to Zayn.

Bradford City caught wind of the snap and on New Year's Day (01Jan16) representatives from the athletic organisation tweeted the following message: "@GiGiHadid @bellahadid Gigi, do you not have the new #bcafc shirt? We'll have to get you one!"

Zayn joined the conversation on his own account by retweeting the sports team's post and making a coy comment on the origin of the shirt, writing: "It's a lil old ;)".

The romantic internet teasing commenced a week before (ends25Dec15) when Zayn posted a selfie of himself with Gigi on his Instagram account. The sweet black and white photo featured Gigi pressing her face against his cheek.