Are Michael Buble and actress Reese Witherspoon such BFFs that he told her that he and his wife Luisana Lopilato were expecting baby Buble, which we now know is a boy, before his family? Not quite. The comedian-cum-crooner did share his the stork's a'coming news with Witherspoon, an unlikely duet partner on his new album 'To Be Loved,' because he could not contain his joy.

It's sort of a twist on that whole "love the one you're with" concept.

Buble was on the phone with Witherspoon, herself a mother of three, while they were discussing their cover of 'Something Stupid.'

"I had just found out [my wife] was pregnant," the 'Haven't Met You Yet' singer told Parade. "It was the greatest day of my life, so I just said, 'You know, I’m having a baby!' And Reese was so sweet about it and excited for me. It was nice for us to bond that way."

Aw! It certainly broke the ice and fostered a bond between the collaborators. Plus, she could give him tips, with three of her own at home.

Watch the Michael Buble 'Haven't Met You Yet' Video