After her split from Van Veen, Williams starred in "Horizon Line," where she met Alexander Dreymon. The pair connected on set immediately and started dating at the end of 2019, as reported by People. Throughout their relationship, the couple have kept their personal life under wraps and out of the spotlight.
In late 2021, Williams and Dreymon privately welcomed their first child together, a son named Arlo. The "Fellow Travelers" star opened up about her experience with motherhood in a January 2023 interview on "Today With Hoda and Jenna," saying, "I'm very proud. I get, like, weird and shy when I talk about it because it's so new. But I'm obsessed with him; it's all I think about. It's just the most unbelievable adventure. I feel lucky every day."
But having a child together isn't the only milestone Williams and Dreymon have celebrated. In December 2022, Dreymon revealed via Instagram that he and Williams were engaged in a sentimental post honoring the "Get Out" actor. "Premiere of M3GAN with a screaming, laughing, cheering crowd. It's the ultimate fun scarefest," he wrote. "I'm so proud of my gorgeous fiancée @aw."
