Michael Kovac/Getty Allison Williams quietly married fellow actor Alexander Dreymon, PEOPLE confirms The couple started dating at the end of 2019 after meeting on the set ofHorizon Line, and announced their engagement in December 2022 Williams and Dreymon share 3-year-old son Arlo, whom they secretly welcomed in November 2021 Allison Williamsis married! TheGirlsalum, 37, quietly tied the knot with fellow actorAlexander Dreymon, 42, PEOPLE confirms. The news comes shortly after Williams referred to Dreymon as her "husband" in an interview withThe Guardianpublished in late June. Williams and Dreymon met on the set ofHorizon Line,where they played a couple who are faced with an impossible situation when their airline pilot suffers a fatal heart attack mid-flight. Their on-set chemistry translated off-screen, and they started dating at the end of 2019. Cindy Ord/MG24/Getty In November 2021, the pairsecretly welcomed a baby named Arloviaemergency C-section, though the news of their son wasn't revealed until April 2022. Later that same year in December, the couple made theirred carpet debutat the Los Angeles premiere of Williams' horror comedy filmM3GAN. Two days later on Dec. 9, 2022, Dreymon posted a few photos from the event onInstagram— andconfirmed the pair's engagementby referring to Williams as his "fiancée." "Premiere ofM3GANwith a screaming, laughing, cheering crowd. It's the ultimate fun scarefest. I'm so proud of my gorgeous fiancée," Dreymon wrote at the time, tagging Williams in his caption. Although the couple have kept details of their relationship relatively private, the two continue to make public appearances together, notablysharing a kiss on the red carpetat the Oscars in March 2023. They also stepped out together forNew York Fashion Weekin February 2024,the Met Gala in May 2024, andthe Giorgio Armani Women's SS25 fashion showin October 2024. Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. Williams was previously married to College Humor co-founderRicky Van Veen, from whom she separated in 2019 after nearly four years of marriage. Read the original article onPeople