Gigi Hadid and boyfriend Zayn Malik appear to be going strong.

The 20-year-old model was all smiles in a new photo the 23-year-old British singer shared Tuesday on Instagram. Malik posted a Polaroid of himself kissing Hadid alongside a t-shirt of a gun shooting roses.

Hadid and the former One Direction singer have been linked since November and went public with their relationship on social media in December. The model also starred in Malik's music video for his first solo single, "Pillowtalk," which debuted in January.

"Zayn and Gigi are getting serious," a source told E! News this month. "Gigi was so excited when Zayn asked her to be in his music video. They both acted very professional on set but it was very obvious that they were in love. They couldn't stop flirting with each other."

The cozy snap comes amid controversy about Hadid's Vogue China cover. Fans were dismayed to see the magazine erased the model's stomach moles with Photoshop when Hadid shared the March issue last week on Instagram.

Hadid, who is the daughter of Mohamed Hadid and "The Real Housewives of Beverly Hills" star Yolanda Hadid, is known for her modeling work with Victoria's Secret and Sports Illustrated.

Malik left One Direction last March and will release his debut solo album, Mind of Mine, on March 25.