Gigi Hadid and Zayn Malik Spotted Out Again: 'They're Just Having Fun,' Source Says

Gigi Hadid and Zayn Malik are definitely turning into a thing.

Gigi Hadid and Zayn Malik are continuing to get to know one another better.

The 20-year-old model and the former One Direction boy bander were photographed together on Tuesday, enjoying a low-key date night at The Nice Guy in West Hollywood, California. The outing marks the second time Gigi and Zayn have been photographed together at the Los Angeles hot spot. Zayn, 22, picked up Gigi on Sunday night at the club -- where Justin Bieber had his American Music Awards afterparty -- igniting reports that the two are dating.

Gigi and Zayn both dressed casually for Tuesday's meet-up, Zayn rocking a white Social Distortion T-shirt, while Gigi wore glasses and appeared makeup-free. The two actually came with Gigi's younger sister, 19-year-old Bella Hadid, but Bella stayed behind when the two left together.

WATCH: Gigi Hadid and Kylie Jenner Are Friends That Spank One Another and Pray Together

It "seems like a budding romance," an eyewitness tells ET.

Though according to a source close to Gigi, the two aren't officially boyfriend and girlfriend yet. "They recently just met and they’re just having fun," the source tells ET. "Nothing more to it as of right now."

Still, the good-looking pair is obviously making time for one another despite their busy schedules. An eyewitness tells ET the two were together at the Bowery Hotel in New York City two weeks ago.

Both Gigi and Zayn are coming off recent relationships. Gigi split from singer Joe Jonas earlier this month, while Zayn called off his two-year engagement to Little Mix singer Perrie Edwards in August. While their relationship is certainly new and the pair haven't made anything official, sources says the singer is smitten.

… Well, who could blame him?!

WATCH: Gigi Hadid Says Joe Jonas First Asked Her Out When She Was 13

Watch the video below for more on Gigi and Zayn's budding relationship.