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Gwen Stefani, Blake Shelton

Norm Hall/Getty Images

Blake Shelton and Gwen Stefani got their sports on this Sunday!

The two, who have been dating for at least a month and a half, attended a Green Bay Packers and Arizona Cardinals NFL game at University of Phoenix Stadium in Glendale, Arizona.

Shelton, 39, and Stefani, 46, cheered for the home team. The former Voice coach and country star sported a Cardinals sweatshirt, while his co-star wore a camouflage Cardinals baseball cap.

"They were sitting close and holding hands at a point. They were extremely friendly to fans, players and the people around them," a source told E! News. "Blake loves football and is a big fan of the Cardinals so it was nice that Gwen saw him in his sport element."

During the game, the couple took time to pose for a selfie, as seen in a photo posted on the team's official Twitter page.

"You could see how in love they are with each other," our insider added.  "Gwen was smiling ear to ear throughout the whole game!" 

Stefani posted on her Instagram page a video of the two chatting and standing on the edge of the football field.

@nfl gx

A video posted by Gwen Stefani (@gwenstefani) on

She also posted on her Twitter a selfie showing her, Blake and friends riding inside a vehicle on the way to the game.

Shelton and Stefani flew to Arizona from Los Angeles, where she lives, via a private jet.

 

Gwen Stefani, Blake Shelton

Clint Brewer / TC / Splash News

Last week, just before Christmas, Shelton and Stefani were spotted in his home state of Oklahoma, where they visited a home goods store he used to frequent with now-ex-wife Miranda Lambert, 32. She is also a Cardinals fan.

Stefani is in the midst of divorce proceedings with Gavin Rossdale, 50. Their three sons were not spotted on either trip.