Eric Dane has said that he became 100 times more attracted to his wife Rebecca Gayheart when she became a mother for the first time.

Looks like that number may be going up: The couple is expecting their second child, a source confirms to PEOPLE.

The new arrival will join the couple's daughter Billie Beatrice, 16 months, whom Gayheart, 39, and the Grey's Anatomy star, 38, welcomed last year.