Ben Foster Files for Divorce from Wife Laura Prepon After 5 Years of Marriage

The 'X Men: The Last Stand' actor noted their date of separation as Sept. 9, 2023 and cited "irreconcilable differences" as the reason behind their separation

Laura Prepon and Ben Foster are going their separate ways after five years of marriage.

According to paperwork obtained by PEOPLE, Foster, 44, filed for divorce from the That ’70s Show star, also 44, and cited "irreconcilable differences" as the reason behind their separation. He stated the two were no longer able to "live together successfully as husband and wife."

The X Men: The Last Stand actor noted the former couple's date of separation as Sept. 9, 2023, and asked the court to enforce their 2018 prenuptial agreement and make an "equitable division" of their marital assets and debt.

Foster also requested the court to incorporate their "marital dissolution agreement and agreed parenting plan" into their final decree of divorce. When it comes to their attorney fees, the actor asked for each party to pay their own fees and divide any other court costs equally.

Related: Laura Prepon Poses with Her Kids on That '90s Show Set: 'So Meaningful to Show Them'

Prepon and Foster were longtime friends before they began dating in July 2016. A few months later, the two got engaged in October 2016 and welcomed their daughter Ella in summer 2017.

The couple went on to tie the knot in June 2018, with the former That ’70s Show star posting a black-and-white photo of the pair embracing on their happy day. “Just Married! Thank you for all the love and support,” Prepon wrote alongside the sweet snapshot. “Wishing all of us the good stuff!”

Then in 2020, the couple welcomed their second child and announced the news with a post on Instagram, alongside a photo of her newborn son.

Related: Why Laura Prepon Is Open About Motherhood but Mum on New Son's Name: 'We're Very Protective'

In the sweet image, Prepon could be seen gazing down at her son, who was swaddled in a hospital blanket and wearing a pink, blue and white beanie. She held the baby’s tiny hand up to her lips, smiling proudly.

“Welcoming home our new bundle of love. Overwhelmed with gratitude. ❤️❤️❤️❤️,” Prepon captioned the snapshot.

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In April 2019, the actress opened up about how she and Foster balanced their careers and being parents. On a segment of The MOMS, the Orange Is The New Black star revealed that she “had to get back to work really quickly” after giving birth.

“Ben and I are really great about if I’m at work, he’s [at home], and if he’s at work, I’m [at home],” she said. “[But] I do feel guilty, and I just know that [Ella would] be proud if she knew. I’ve talked to a bunch of women [asking], ‘How do you do this?’ And they’re just like, ‘There’s really no solution. You just do it.’ ”