Debra Messing dating costar Will Chase

Debra Messing has a new man on the go. The former Will & Grace star — who announced Dec. 20 that she was separating from her husband of 10 years, Daniel Zelman — is reportedly dating her Smash costar, Will Chase.

Chase, 41, recently separated from his wife, Broadway actress Stephanie Gibson, and the couple are getting divorced, according to People magazine.

Chase and Messing, 43, have been an item for about six weeks.

“It all happened very fast and it’s a difficult situation,” a source said.

Messing and Zelman have one son, 7-year-old Roman. Chase and Gibson have no children, but he has two daughters, Daisy and Gracie, from a previous marriage.