Ever since Gigi Hadid and Zayn Malik made their relationship Instagram official [2], the couple seems to be getting more and more comfortable showing off their new romance. On Tuesday, Zayn uploaded a captionless black and white Polaroid snap of himself kissing a smiley Gigi on Instagram. It's just the latest PDA from the pair, who first sparked dating rumors [3] back in November. Following Gigi's sexy appearance [4] in Zayn's "Pillowtalk" video, the duo stepped out for a casual date night [5] in LA. See the steamy moment above, and then watch Gigi's nostalgic performance on Lip Sync Battle [6].