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Blake Shelton just loves to gush over girlfriend Gwen Stefani.

The two have officially been dating for over a year now, and on Friday's episode of "The Ellen DeGeneres Show," the 40-year-old country crooner shares why he's so over the moon for the 47-year-old No Doubt front woman.

"It's just been an eye opener to be with someone like her," Shelton -- who divorced Miranda Lambert in the summer of last year -- explains. "Believe it or not, I mean, you think Gwen Stefani and No Doubt, she's literally may be the most normal person that I have ever met in my entire life."

WATCH: Gwen Stefani and Blake Shelton Lock Lips While Celebrating Thanksgiving With Both Their Families

He adds, "And she's hot, have you seen her?"

One thing's for sure, Shelton is smitten. "It's been good for me to be with somebody that's so grounded," he tells DeGeneres. "And just a good human being with a great heart."

WATCH: Gwen Stefani's Sweet Message to Blake Shelton -- 'Thank You for Kissing Me Back to Life'

The feelings are mutual for Stefani -- who also went through a divorce with Gavin Rossdale last year. When speaking to ET at Glamour's Women of the Year Awards last month, she had nothing but praise for Shelton. "It's incredible to have a best friend like that guy," she said. "He's an amazing person."