Costner and Baumgartner began seeing each other in 1998 and got married in 2004.
Over their 18-year marriage, the couple welcomed three kids, two sons and a daughter.
During the divorce proceedings, Costner’s lawyers were adamant that he did not commit infidelity during the marriage.

There was nothing there.
They have kids and are going through a divorce.
I just hope that it ends peacefully for them.

I hope his divorce resolves and his kids are minimally impacted."
However, in January 2024, a source close to Baumgartner confirmed that they were dating.
The source toldPeople, “Josh was initially just a friend.

[She] likes hanging out with him.
He is a divorced dad and understands what she’s been going through.
They both love the ocean and beach life.
It’s something that makes Christine happy.”