John Shearer/Getty Images via ABCBlake Shelton and Gwen Stefani are currently shooting season 17 of The Voice, and they couldn’t be happier, according to People.

“They’re coming up on their four-year anniversary, but Blake and Gwen still act like lovebirds,” an unnamed source tells the magazine.

The couple started dating in the fall of 2015 after they both went through divorces. They’d met a year earlier, on The Voice season seven.

“They’re really happier than ever, and being back where they first fell in love has been fun for them,” the source goes on. “They can’t believe how quickly time has flown by, and their relationship is very solid.”

“Blake worships her, and Gwen feels very secure with him,” the insider adds.

Gwen fits right in on The Voice, returning to the show after longtime coach Adam Levine announced he was leaving after sixteen seasons in May.

“It’s like she never left,” People’s source observes.  “Her kids also love going to set.”

Season 17 of The Voice — which also stars Kelly Clarkson and John Legend — starts September 23 on NBC.

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