EXCLUSIVE: Blake Shelton Gushes About Girlfriend Gwen Stefani: 'I Just Like Being With Her'

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

Blake Shelton opened up to ET behind the scenes of The Voice two-night finale on Monday, dishing on his relationship with Gwen Stefani.

Fresh off their dynamic Billboard Music Awards performance of romantic duet "Go Ahead and Break My Heart," Shelton couldn't say enough about how proud he is to be with Stefani.

WATCH: Blake Shelton & Gwen Stefani Heat Up the Billboard Music Awards With Romantic Duet

"I just like being with her, but when she's all dolled up and we go places, it's always fun for me," Shelton told ETonline's Sophie Schillaci. "If she was here right now, not one person here would be looking at anybody else but her. It's just cool to know that's who I came here with. That's basically what ['A Guy With a Girl'] is about. They may come up and talk to me, but it's only because I'm one person over from her. Pretty cool."

"A Guy With a Girl" is one of the most touching tracks from Shelton's latest album, If I'm Honest.

While Shelton is clearly infatuated with the No Doubt frontwoman, dating her means he also has to get along with her three sons, which luckily doesn't seem to be a problem for the country crooner, who has already welcomed Stefani's boys -- 9-year-old Kingston, 7-year-old Zuma, and 2-year-old Apollo -- into his home life.

WATCH: Gwen Stefani Speaks Out on 'Shocking' Duet With Blake Shelton

"When they come out there, I don't see them much because if they're at my place in Oklahoma, they're in the woods," Shelton said. "I don't know how to keep control of them."

One of the downsides to dating another celebrity is dealing with the constant rumor mill churning out various gossip, but Shelton had fun with recent headlines.

"I read that we're having twins in the latest tabloid, and I think you can fit two humans in there," Shelton said, referring to his belly. "Maybe three in there!"

After the couple brought fireworks to the BBMA stage over the weekend, there's sure to be demand for an encore. Shelton held out hope for a repeat performance, but shifted focus to his protégé, The Voice finalist Adam Wakefield.

WATCH: Blake Shelton Admits Writing Country Duet With Gwen Stefani Was a Way to 'Impress' Her

"If she is ever at one of my shows or I'm at one of her shows, we got to do it. But this is the guy I want to bring on tour!" he said gesturing to Wakefield.

"I'm going to hold you to that!" Wakefield said.

Watch Shelton and Stefani get cozy after Sunday's much-talked-about duet in the video below. The Voice's two-part finale airs Monday and Tuesday at 8p.m. ET/PT on NBC.