Josh Harris says that he and his wife of 20 years are separating.
Harris made the announcement on Wednesday on his Instagram account.
He says that "In recent years, some significant changes have taken place in both of us."
Harris and his wife have three children together. He says that "We hope to create a generous and supportive future for each other and for our three amazing children in the years ahead."
Harris rose to prominence in the Evangelical world in 1997 when he wrote the book I Kissed Dating Goodbye. The book championed courtship over dating and was extremely popular.
However, last year Harris released a statement apologizing for the book and saying that it had caused many people serious harm.
Harris closed his statement thanking readers for understanding, and asked for privacy for his family.