"Happy New Year from our quarantine den to yours," Sofia Pernas wrote on Instagram
Justin Hartley and Girlfriend Sofia Pernas
Sofia Pernas and Justin Hartley
| Credit: Sofia Pernas/Instagram

Justin Hartley and Sofia Pernas just took their relationship to the next level.

Hartley and Pernas made their Instagram debut as a couple on Thursday night as they celebrated New Year's Eve in their "quarantine den" amid the COVID-19 crisis. The pair posted a series of snuggled-up selfies to their respective accounts.

"Last minutes of 2020 here in LA. Bring on 2021! Happy New Year!" the This Is Us star, 43, captioned a smiley black-and-white photo of the two dressed to the nines and seated in a kitchen.

Alongside a more casual outdoor shot, Pernas, 31, wrote, "Sayonara 2020, it’s been real. Happy New Year from our quarantine den to yours ❤️"

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In early June, a source confirmed to PEOPLE that the pair had "been dating for several weeks" and were "spending a lot of time at his house."

Two months later, Hartley and Pernas seemingly enjoyed some time together, with the actress sharing a photo to her Instagram Story of a man leaning on a marble countertop, holding a cigar and an iced beverage in his hands. "Easy like Sunday mornin,' " she captioned the picture.

Hours later, the A Bad Moms Christmas actor posted a snap of himself sitting in a pool and holding a dog. Atop the photo, he wrote a nearly identical caption to the one on Pernas' post: "Paisley like Sunday mornin.' "

From June 2015 to May 2016, Hartley and Pernas appeared together on The Young and the Restless — the same soap on which he worked with his estranged wife, Selling Sunset's Chrishell Stause. Hartley and Stause, 39, a soap star-turned-celebrity-real-estate agent, were married for two years before he called it quits in November 2019.

justin hartley and sofia penas
Justin Hartley (L); Sofia Pernas
| Credit: Doninik Bindl/Getty; AFF-USA/Shutterstock

Speaking on Radio Andy in October, Hartley shared with host Bevy Smith that he was "really happy with where I am."

"I'm happy with my career. I'm happy with my personal life," said the star. "I'm healthy, I'm safe. ... I mean, all of those things. So I'm very thankful."

The Revel Spirits owner added that while he doesn't necessarily mind the attention on his personal life, he won't feed into it either.

"If they're getting entertainment from that, I think it sort of comes with the territory, but I've also sort of always had this view that I will have a public life but I will be very private about my personal affairs," Hartley said.