Ben Foster and Laura Prepon joined the growing list of estranged celebrities this year, but they shockingly separated a year earlier.

Ben Foster and Laura Prepon just put a big X on their marriage ... 9, 2023, exactly one year prior to his divorce filing. Prepon was served the documents Sept. 13, according to Davidson County court records. Representatives for Foster and Prepon did ...

Foster cited irreconcilable differences as the reason for the split and listed their date of separation as Sept. 9 — the same day he filed for divorce.