Munn and Mulaney tied the knot in an intimate New York wedding in July 2024 and also share son Malcolm, 3. The couple were first spotted together in June 2021, five months before welcoming their son. Mulaney, 42, announced that Munn was expecting Malcolm on an episode of Late Night with Seth Meyers in September 2021.

“I got into this relationship that’s been really beautiful with someone incredible,” he said. “And we’re having a baby together. I was nervous when I was about to say the news!”

While thanking Seth Meyers for having him on the show, Mulaney, who had at the time recently gone to rehab for a cocaine and alcohol dependency, said that Munn and the baby “helped save me from myself in this early journey out of recovery.”

In March 2024, Munn announced that she had been diagnosed with breast cancer a year prior. The following month, she spoke to PEOPLE about how the scary news affected her parenting and relationship with her husband.

“It would’ve felt like climbing an iceberg without him,” said Munn, who endured four surgeries over 10 months. She called Mulaney supportive and “an incredibly hands-on father.”

Mulaney would go “to and from the hospital—taking Malcolm to the park, putting him to nap, driving to Cedars-Sinai, hanging out with me, going home, putting Malcolm to bed, coming back to me,” Munn said. “And he did it all happily.”