The 47-year-old singer still thinks Shelton is "the greatest guy ever."
Gwen Stefani was excited to return for a third season as a coach on The Voice but confessed that she had some concerns about how it would affect her relationship with boyfriend Blake Shelton, who is also on the NBC show.
"I was nervous at first," she told Carson Daly on Wednesday's Today show, adding that she thought, "Is this going to be awkward?"
WATCH: Blake Shelton, Gwen Stefani and Her Sons Throw Epic Dance Party -- Watch Their Amazing Moves!
Stefani even noted that sometimes they're "driving home" and she has to stop herself from talking about her team with the 40-year-old country crooner. "I don't know if you are the enemy!" she exclaimed. "I don't know."
That being said, the 47-year-old singer still thinks Shelton is "the greatest guy ever."
WATCH: Blake Shelton Jokes About 'Hooking Up' With Gwen Stefani
"We do help each other," she admitted. "I've learned a lot about country music."
Stefani also shared how she and Shelton celebrated Valentine's Day while he was in Oklahoma and she was in New York City. "I got some beautiful flowers and lots of texts," she gushed. "It was fun."
Continuing to praise her guy, Stefani said that she's "so lucky" to be with him.
WATCH: Blake Shelton and Gwen Stefani Spotted Kissing During Family Lake Trip
While at the People's Choice Awards in January, Shelton admitted to ET that he didn't have anything planned for Valentine's Day just yet. "I'm one of those guys that's always last minute, like, 'Oh dammit. It's here, it's here!' Get some flowers or something," he said. "I'm not good at planning surprises when it comes to Valentine's Day, but we'll definitely celebrate."
In another recent exclusive interview with ET, Shelton also joked about working with his girlfriend on The Voice and what will happen if Stefani tries to steal a singer from his team. "She is sleeping on the couch, that is what happens," he quipped. "She will be in the dog house."
