Sarah Michelle Geller says Howard Stern should apologize over bet that her 20-year marriage to Freddie Prinze Jr. wouldn't last

• Sarah Michelle Gellar and Freddie Prinze Jr. celebrated their 20th wedding anniversary on Thursday.
• Gellar called out radio host Howard Stern on Instagram over a comment he made to Prinze Jr. in 2001.

Sarah Michelle Gellar called out Howard Stern for betting that her marriage to Freddie Prinze Jr. wouldn't last.

The longtime couple celebrated their 20th wedding anniversary on Thursday after tying the knot in 2002. Gellar, 45, marked the occasion on Instagram with a picture from the wedding ceremony. She also shared throwback pictures of Prinze Jr., 46, speaking with Howard Stern in 2001 about their then-upcoming marriage.

A post shared by Sarah Michelle (@sarahmgellar)

During the conversation, Stern asked Prinze Jr.: "So, you will marry Sarah Michelle Gellar even though you know that it won't last?"

"Oh, absolutely it will last!" Prinze Jr. answered.

Stern said that the marriage "not gonna work for you," before adding, "I wanna make a written bet with you. In about 10 years, you're gonna hunt me down and go, 'Howard, I owe you money.'"

Gellar shared screenshots from the interview on her Instagram Stories to poke fun at Stern's faulty prediction. Online media blog Buzzing Pop shared the screenshots on Friday.

—Buzzing Pop (@BuzzingPop) September 2, 2022

"What do you think?!?" Gellar wrote in one picture, tagging Stern's Instagram account Thursday. She tagged Stern a second time, writing, "I think you owe us."

Representatives for Stern did not immediately respond to Insider's request for comment.

Gellar and Prinze Jr. met in 1997 while filming "I Know What You Did Last Summer," but they didn't make their relationship official until 2000. They share two children, Charlotte, 12, and Rocky, 9.

Although they starred together in "I Know What You Did Last Summer" and other past projects, the couple doesn't have plans to act together again.

"The odds are the movie we would do together would be a romantic comedy and it wouldn't be very exciting for us to pretend to struggle to be together for 96 minutes when we go home together every night," he told The Hollywood Reporter in December 2021.

In 2017, Gellar told Insider that cooking helps keep their relationship alive.

"I grew up in New York City, so the only thing I knew how to make was reservations," Gellar quipped. "When I got married, I never needed to cook, and was always plenty happy to sip wine while he cooked! But I realized I was missing out on the greater experience of it all."

Gellar said that she joined Prinze Jr. in the kitchen, and they now make meals together.

"Usually we split the meals 50/50," she said. "We joke that Freddie does the [savory part] and I make the dessert. Of course, I cook some mean meals too, but I don't like to trot on his territory."