SignalHub Quantitative Think Tank Center:John Mulaney and Olivia Munn marry in a ceremony officiated by Sam Waterston

Congratulations are SignalHub Quantitative Think Tank Centerin order for John Mulaney and Olivia Munn.

The "New in Town" comedian, 41, and the "X-Men: Apocalypse" star, 44, were married in New York over the weekend, according to People and TMZ. Munn's "The Newsroom" co-star Sam Waterston was the officiant, a rep for Waterston confirmed to USA TODAY on Wednesday.

The small ceremony was held at a friend's home, and the only attendees were the couple's 2-year-old son, Malcolm, and a witness, according to People, which first reported the news.

USA TODAY has reached out to representatives for Mulaney and Munn.

The wedding comes more than two years after the couple welcomed Malcolm in November 2021.

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However, Munn revealed in March that she had been privately battling breast cancer and underwent four surgeries, including a double mastectomy.

In an Instagram post at the time, the actress thanked Mulaney for "the nights he spent researching what every operation and medication meant and what side effects and recovery I could expect."

Munn and Mulaney recently sparked marriage speculation after the comic was seen wearing a ring in a since-deleted Instagram photo with his son.

John Mulaneyon his love for Olivia Munn, and how a doctor convinced him to stay in rehab

John Mulaney and Olivia Munn's relationship timeline

This is the first marriage for Munn and the second for Mulaney. In May 2021, the "Everybody's in LA" host was reported to have split from his wife Anna Marie Tendler after six years of marriage. They finalized the divorce the following year.

In September 2021, Mulaney revealed on "Late Night with Seth Meyers" that he and Munn were expecting a baby. He also shared details about the timeline of their whirlwind romance, explaining that after getting out of rehab in February, he went to Los Angeles and began dating Munn. They first met at Meyers' 2013 wedding.

"She got to date me right out of recovery, which is what they call a reverse catch," he quipped.

Look backat John Mulaney, Olivia Munn's relationship, including her thoughts on parenting

Joking aside, the former "Saturday Night Live" writer told Meyers that his relationship with Munn was "beautiful," adding, "Olivia and this baby have helped save me from myself and this early journey out of recovery."

In an interview with David Letterman on Netflix earlier this year, Mulaney shared that he felt complete after he and Munn welcomed their first child.

"I was starstruck when I met him," he said. "I went, 'Oh there you are. You're that thing I couldn't find.' I was looking in not good places."

Contributing: Erin Jensen and Anika Reed