"They're my friends," the 36 year-old singer said. "Gwen and I have really bonded lately. She's just the coolest, most wonderful person ever and people don't really realize that they are humans and they have problems just like everybody else."
Though he didn't reveal specific details on the romance, he did admit that the trio has been spending a lot more time together.
"I love my friends and I support my friends through everything," he added. "I've been actually really enjoying getting to know Gwen better in the past two months."
This isn't the first time Levine has acknowledged the new relationship. A day after Shelton and Stefani confirmed their status as a couple, Levine took to Facebook to share a sweet selfie of the three of them, simply captioning it, "Family." He also jokingly wrote that Shelton was the stepbrother.
Since confirming their relationship, Shelton and Stefani haven't been shying away from the cameras. On Wednesday, just hours after news broke, the two stepped out holding hands in Nashville, Tennessee, to attend the Warner Music Nashville Country Music Awards after party. An onlooker tells ET that they "looked happy.
Late last month, Levine, Shelton, Stefani and fellow Voice coach Pharrell Williams appeared on the The Tonight Show with Jimmy Fallon where they played a game of "Spin the Microphone." Williams challenged Stefani and Shelton to perform Drake's "Hotline Bling," but there was one major problem -- Shelton wasn't familiar with the hit song.
As we wait in anticipation to (hopefully!) see Stefani and Shelton's romance in action on Monday's The Voice, watch the video below to see their hilarious duet.