Kevin Costner is confirming rumors that he cheated on his ex-wife Christine while they were still married.

In the latest court documents in their public divorce fight, the star of Yellowstone called the accusations “harassment” and said that he had never had an affair with anyone else during their 18-year marriage.

Christine asked Costner to turn over “all statements, receipts, invoices, canceled checks (front and back) and other documents reflecting expenses paid by you, or any person at your request or on your behalf, relating to any extramarital romantic relationships.”

The actor said that he “has no relevant documents to turn over for ‘extramarital romantic relationships’ he had” because he “had none.”

He also said, “I don’t know for sure if Christine had any “extramarital love relationships” before they split up, and if she did, I don’t know if she spent any of his money on them or put any costs for them on credit cards that he paid for.”

Christine asked Costner for a divorce in May, claiming “irreconcilable differences” as the reason.

Reports say that Kevin did not agree with the divorce, which he said Christine filed for without telling him.

Kevin and Christine have three children: Cayden Wyatt, who is 15, Hayes Logan, who is 14, and Grace Avery, who is 12.