When asked if it's weird for Lachey to see her or hear her name, he replied, "no, not at all, it's like another lifetime ago."
So does the new father ever reminisce on old times by curling up and watching a Newlyweds: Nick and Jessica marathon?
"As you could imagine, that's not popular viewing in my house," he said. "We don't sit around as a family and watch the old DVDs!"
We didn't think so...we're pretty sure Vanessa Lachey wouldn't like that too much!
(E! and Bravo are both part of the NBCUniversal family.)