Kevin Costner had suspected that his ex-wife, Christine Baumgartnerhad an affair with their banker and former neighbor, Josh Connor, as “Page Six” writes.

The “Yellowstone” actor and the handbag designer, who have three children, divorced last September. Baumgartner has since moved on with her life, while Kevin Costner has reportedly started dating singer Jewel.

“Kevin had strong suspicions that something was going on between Christine and Josh”a source told Us Weekly, adding that the pair’s relationship became romantic relatively recently. “Josh has been Christine’s rock throughout the ordeal of the divorce. If Kevin has a problem with that, that’s his problem.”

Christine Baumgartner and Josh Connor first sparked romance rumors over the summer after the pair vacationed together in Hawaii amid her divorce battle.

However, the actor’s ex-wife and her lawyer denied in court that she was dating Connor after Kevin Costner claimed her new “boyfriend” had given her $20,000 in cash.

Although the details of the former couple’s agreement have not been released, sources said that Christine Baumgartner will walk away with more money than their prenuptial agreement originally stated.