It's hard to believe "good friends" have such steamy chemistry, but Zayn Malik and Gigi Hadid have set pulses racing in the new video for his first solo single, "PillowTalk." Sharing kisses and sexy caresses, the former One Direction star and the supermodel certainly look like they're more than friends.

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The unveiling of the steamy video comes after Zayn remained tight-lipped about his relationship with the model.

Gigi Hadid stars in Zayn Malik's debut solo music video

"Yeah, we're good friends," Zayn told Zane Lowe on his Apple Music Beats 1 radio show.

Gigi and Zayn have been rumoured to be dating since November, with reports suggesting that they were planning to move in together in New York. The couple were snapped browsing places to rent in Soho at the beginning of January, and have been spotted enjoying a number of date nights together in the Big Apple.

Gigi's appearance in the music video is not the only thing to get fans talking; Zayn has also surprised some Directioners with his new sound, which he has described as "cooler" than the music he was previously known for.

A photo posted by Zayn Malik (@zayn) on Dec 20, 2015 at 3:53am PST

Zayn and Gigi have been dating since November

The 23-year-old has stayed true to his word and taken his music in a different direction to the pop songs fans of One Direction are used to.

"I think the boys knew, in terms of the music, that wasn't my cup of tea," Zayn said. "They would try and facilitate things for me I could sing R&B adlibs here and there, that was nice."