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

But, on Nov. 12, Prepon’s husband of six years Ben Foster filed for divorce from the actress citing “irreconcilable differences” and that they were “unable to live together successfully as Husband and Wife.” Most notably, Foster declared their date of separation was September 9, 2023 – just two days after Masterson’s sentencing.

Ben Foster has filed for divorce from actor Laura Prepon in Tennessee, stating that they are 'unable to live together successfully as husband and wife.'