"Your child comes first, that's all," Idina Menzel, 45, tells PEOPLE Now of co-parenting with Taye Diggs
Idina Menzel

Idina Menzel and ex-husband Taye Diggs have found a perfect harmony when it comes to raising their son — separately but together.

“Your child comes first, that’s all,” Menzel, 45, tells PEOPLE Now. “It’s all about that.”

The former couple — who split in 2013 — share Walker Nathaniel, 7.

“He comes first and you have to get past your own egos and you never talk bad about each other,” explains Menzel — who just released a full-length album, idina — of the formula for parental harmony.

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Diggs previously told PEOPLE that Walker is his and Menzel’s “main objective.”

“He’s what’s most important for us, so we’re still there as a family,” Diggs explained at the time, adding of Menzel, “We were friends to start out with, but especially when you have a kid in the mix, there’s no time for any negativity.”

Menzel also talks to PEOPLE Now about how to educate her son on current events — like the police shootings across the country.

“It’s hard to know what’s age-appropriate as far as educating your child and how much to teach him about what’s out there, and that there are bad people out there and there are people who don’t like other people,” the star explains. “You want to keep him insulated and safe and not ruin his perspective of the world.”

— Lindsay Kimble