Norm Hall/Getty ImagesBlake 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.
Selfie break for @blakeshelton and @gwenstefani. #GBvsAZ pic.twitter.com/T9ZTIehcp2
? Arizona Cardinals (@AZCardinals) December 27, 2015"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.
She also posted on her Twitter a selfie showing her, Blake and friends riding inside a vehicle on the way to the game.
#football @AZCardinals @blakeshelton Eeeeeekkkkk! @NFL gx pic.twitter.com/tudnUFl0fn
? Gwen Stefani (@gwenstefani) December 27, 2015Shelton and Stefani flew to Arizona from Los Angeles, where she lives, via a private jet.
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.
Michael Bidwill meets w/ @mirandalambert and @blakeshelton before a special #SB49 party performance.
#CardsPrezPass pic.twitter.com/apftzz8byX
? Arizona Cardinals (@AZCardinals) January 31, 2015Stefani is in the midst of divorce proceedings with Gavin Rossdale, 50. Their three sons were not spotted on either trip.