Chloë Grace Moretz and Brooklyn Beckham Enjoy PDA-Packed Dinner with Their Families
04/11/2016 AT 04:10 PM EDT
Chloë Grace Moretz and Brooklyn Beckham were spotted looking cozy during a family dinner party at the SoHo House in L.A. on Sunday night.
Moretz was joined by her mother and brother, and most of the Beckham clan – David Beckham, Victoria Beckham and their other sons, Cruz and Romeo – were all in attendance, along with some family friends.
"It was a really fun family late-night dinner vibe," a source tells PEOPLE.
Moretz, 19, and Beckham, 17, who have been romantically linked in the past, "were inseparable all night," the source says. "They had a massive PDA thing going on. Chloë was stroking Brooklyn's arm, and at one point Brooklyn had his head on Chloë's shoulder. They definitely seemed like a couple."
Later in the evening, Moretz got some quality time with Brooklyn's mom. "Victoria moved from her seat at one point to sit next to Chloë and they were having a long chat together, it was really sweet," the source notes.
The young duo were last seen out together in January, when they were spotted exiting London's posh Chiltern Firehouse, per multiple reports.
The actress and model first got close in 2014, while attending the Teen Choice Awards together and enjoying spin class dates.
While they never confirmed the nature of their relationship, Moretz did offer some insight into their connection at the time.
"What I find really interesting about Brooklyn – and what I really love about that kid – is that he is passionate about what he wants, which is to be a professional soccer player," Moretz told Teen Vogue in October of 2014. "And I enjoy someone who is on my level with the seriousness kind of thing."
The 5th Wave star has also made it clear she's not ready for a serious romantic relationship just yet, but is not opposed to casually dating.
"I don't want to date older people, because I'm 18 and older people are more serious," she said. "Then I kind of realized, 'I'll go on dates, why not?' And that's kind of how I am right now."