The 42-year-old actress stepped out in support of her boyfriend, 44-year-old producer Brad Falchuk, on Monday night in Los Angeles, celebrating the premiere of his new Fox show, Scream Queens.
The two have been linked together since last July, but have largely kept under the radar.
"My date and I #screamqueens," Falchuk wrote on Instagram on Monday, sharing a black-and-white selfie of the couple grinning for the camera.
A source tells ET that Paltrow and the Scream Queens co-creator were affectionate at the event, holding hands as they walked from room to room. Falchuk kept the Goop founder close, his hand usually resting on her lower back. They also didn't keep to themselves -- the Oscar winner looked like she was having a great time mingling with fellow guests, especially Nick Jonas, who plays a preppy frat boy named Boone on the series.
"Gwyneth definitely looked like she was glowing and Brad seemed very happy to be out and about with his former Glee gal," the source says. "They were smiling the whole time!"
Falchuk later tweeted a photo of his girl talking with actress Skyler Samuels, writing, "Ladies...#ScreamQueens."
And their sweet date night didn't end there. After the big premiere, the couple had dinner at Italian restaurant Osteria Mozza.
"Finishing the night. Dinner for two. #ScreamQueens Thanks for sharing the celebration with me!" Falchuk tweeted, alongside a photo of his napkin from the restaurant.
In July, the low-key pair packed on the PDA during a romantic vacation
in the Italian resort town of Positano, where they lounged seaside together, and even made their own pasta. Watch below: