Emily Blunt fielded questions from Howard Stern about her ex, Michael Buble, on his SiriusXM radio show this week.

The Sicario star, who’s now happily married to John Krasinki, dated Buble from 2005 to 2008 and it’s been rumored it ended due to his infidelity.

"I don't know, it's complicated,” she replied when Stern stated he was “not faithful" to her. “Now I'm going red ... I never want to talk about it!"

Even though they have both married other people, Blunt talked about her fondness for his family, saying she still “loves” them.

As for Buble, he has previously admitted to eTalk, "I was a jerk and I was careless and reckless with the hearts of women I was with” but never publicly admitted to cheating on Blunt.

He’s now married to Luisana Lopilato, who he’s currently expecting his second child with.

Blunt has a 1-year-old daughter, Hazel, with the former Office star.

image courtesy of Heidi Gutman/NBC