Alexander Dreymon is giving fans and followers a rare insight into his relationship with Allison Williams.

On Friday, the 39-year-old actor seemingly confirmed his engagement to the 34-year-old actress after calling her his “gorgeous fiancée.” It comes as he celebrated her on Instagram following the premiere of her new film, “M3GAN.”

Dreymon posted a series of photos from the premiere night, with most of the pictures showing them together as they pose for the camera.

The “Last Kingdom” star wrote in the caption, “Premiere of ‘M3GAN’ with a screaming, laughing, cheering crowd. It’s the ultimate fun scarefest.”

He continued, “I’m so proud of my gorgeous fiancée,” and tagged Williams’ official account. He later added, “Congratulations to everyone who worked so hard on what will likely be a new cult hit.”

The “Get Out” actress has yet to make any statement about the engagement.

In its report covering the social media update, Entertainment Tonight said Alexander Dreymon made the Instagram post two days after making his and Allison William’s red-carpet debut. They attended the premiere of her new and upcoming horror comedy film, which will hit the screens in 2023.

For the outing, the “Girls” actress is said to have donned a charcoal-colored sequined gown.

Meanwhile, the outlet stated that the “American Horror Story: Coven” actor wore a black-striped suit, white dress shirt, and black tie.

Alexander Dreymon and Allison Williams have been private about their relationship. But, sources revealed to People earlier this year that they had started a family together after welcoming their first child the past winter season.

At the time, the magazine said that the two celebrities, along with their son, were spotted on vacation with their family. It noted that the trip also saw the actress’s father, newsman Brian Williams, with the trio in the Bahamas.

People noted, as well, that the “M3GAN” actress was seen wearing what appeared to be an engagement ring at the time, with a source stating, “They seemed to be very happy and very much in love.”

When asked for an official statement, however, the magazine said reps for both celebrities declined to comment.

Alexander Dreymon and Allison Williams reportedly first met on the set of their film, “Horizon Line,” in 2019.

Elsewhere in the report from People, published in April 2022, the same source claimed that the two personalities have been together since the end of 2019, adding that “they are both private people individually.”