"Her friends and family have been incredibly supportive of her relationship with Josh, and everyone can tell how happy they are together," a source tells PEOPLE of Kevin Costner's ex-wife.

Nearly a year after Kevin Costner and Christine Baumgartner finalized their divorce, Baumgartner is making things official with her new boyfriend.

Christine Baumgartner, Kevin Costner’s ex-wife, is engaged to former neighbor Josh Connor after finalising her divorce last year. The engagement comes months after their rumored romance and Christine’s high-profile child support battle with Costner.