And Diggs, 43, knows people are rooting for them to get back together after separating in December, he tells Redbook magazine.
"I'd be lying if I said there weren't times when I thought, Oh, man, people are going to trip out [if we split]. Maybe they thought it was cute that we met in Rent," he says. "There weren't a lot of couples like us in the theater community – and I know there aren't a lot of performers as talented as she is … and then you have the whole mixed [race] thing."
Regardless of the status of their relationship, the star of TNT's new show Murder in the First says he and Menzel – who entertained a whole new generation of musical lovers as the voice of Elsa in Disney's Frozen – are committed to their son Walker, 4.
"It was easy for people to root for us," he says. "Right now, we're still trying to figure out a lot of stuff because we're on different coasts and our son is getting older."