Zayn Malik and Gigi Hadid Get Flirty on Twitter

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Just "good friends" huh?

Despite being apparently just "good friends," Zayn Malik and Gigi Hadid sure are great at giving people something to talk about.

The 20-year-old supermodel and the 23-year-old singer recently worked their fans into a frenzy on social media, thanks to a series of flirty back-and-forth tweets from their verified accounts.

It all started on Friday when Zayn responded to Gigi's tweet reading, "What Would Beyonce Do?" Zayn calls Gigi "babe" while also calling attention to his new music video for his single, "Pillowtalk." Gigi, of course, stars in the steamy video, in which she makes out with him.

WATCH: Zayn Malik Makes Out With 'Good Friend' Gigi Hadid in 'Pillowtalk' Video

"You seen the video babe?" Zayn wrote. "Someone's looking."

Gigi then further fueled the fire. "Mah musta missed it. Jokes ... I wasn't looking at myself, trust me," she saucily replied back, adding a few choice emojis.

The mushy Twitter exchange comes after Zayn called Gigi a "good friend" in an interview with Beats 1 last week. Not surprisingly, plenty of fans aren't buying it thanks to the new "Pillowtalk" video, multiple date night sightings of the gorgeous pair holding hands, and their not so subtle Instagram shout-outs to one another.

WATCH: Gigi Hadid Tweets -- Then Deletes -- About Zayn Malik, Joe Jonas Unfollows Her

Watch the video below for more on Zayn's "Pillowtalk":