Photo: Kaia Gerber/Instagram. Inset: Kevin Winter/Getty; Steven Ferdman/Getty

Jacob Elordi, Kaia Gerber

Kaia GerberandJacob Elordiare taking their relationship to the next level.

While the model, 19, andEuphoriaactor, 23, have kept their romance private for the past few months, Gerber showed her boyfriend some love on social media for Valentine’s Day on Sunday.

The model also posted a solo shot of Elordi on her Instagram Story where she called him her “valentine.” She later posted a close-up shot of a bouquet of red, pink and white roses that appeared to be from her boyfriend and said, “lucky girl… 🥰.”

Kaia Gerber/Instagram

Kaia Gerber, Jacob Elordi

Elordi and Gerber’s latest relationship milestone comes after asource exclusively told PEOPLEthat the Australian actor has “embraced Kaia’s Malibu life and seems to love it as much as she does.”

The couple, who first became romantically linked in early September, have been staying together at the home of Gerber’s parents.

“They rarely leave Malibu and instead enjoy the beach, go hiking and meet up with friends for dinner,” the source said at the time.

Steven Ferdman/Getty Images; Brendon Thorne/Getty Images

Kaia Gerber, Jacob Elordi

“Jacob is very sweet to Kaia. They are always very loving and cute together,” added the source. “It’s obvious that Cindy and Rande approve of Jacob too. They spend a lot of time together.”

ChannelingElvis Presleyand his ex-wifePriscilla Presleyfor their fun holiday look, Elordi donned a blue suit with a white collar and a pair of aviator glasses for the occasion, which he made complete with his hair styled to look reminiscent of the late king of rock and roll.

Meanwhile, Gerber sported a skin-tight purple top and matching pants that she accessorized with retro winged black eyeliner and voluminous hair, as she posed beside her actor beau for the selection of photos.

Elordi and Gerber first became romantically linked in early September when they were spotted dining at the same restaurant, Nobu Malibu. Later that month, the couple were then seen holding hands as they made their way to dinner in New York City.

One onlooker who saw the pair hand-in-hand while out in Manhattan in Septembertold PEOPLEthey appeared “comfortable” with each other.

“Their fingers were interlocked, and they seemed very comfortable together,” said the onlooker. “At one point they weren’t holding hands and Kaia grabbed his and they went on their merry way. They looked happy.”

Since then, the couple continued to spark their romance rumors as they later went on to vacation in Los Cabos, Mexico, with Gerber’s parents, Cindy Crawford and Rande Gerber later that month.

Gerber previously datedPete Davidsonwhile Elordi was most recently linked to his Emmy-winningEuphoriacostarZendaya.

source: people.com