In a rare moment, "The Voice" judges Gwen Stefani and Blake Shelton are rooting for the same thing, although, not for the reality TV show.

In a report by People, the pair was seen cheering for Blake's favorite footbal team, the Arizona Cardinals, at the University of Phoenix Stadium on Sunday, where they were playing against the Green Bay Packers.

The musicians were all smiles during their date as they cheered on their team from the sidelines, donning matching camouflage hats. Earlier in the day, Stefani and Shelton were photographed boarding a private plane from Los Angeles.

At the game, E! News noted that the couple took their time to pose for a selfie, as seen on the Cardinals' official Twitter page. Arizona Cardinals Vice President of Media Relations Mark Dalton tweeted a photo of the pair meeting the Cardinal's president Michael Bidwill as well.

The pair were active on social media during their outing, with the rocker posting an Instagram video of herself and her boyfriend standing on the field.

Blake, on the other hand, posted a photo on Twitter looking excited as he hung around the Big Red Siren.

Other celebrities at the game included David Spade, who also posed a pic with the crooners, and like them, are also fans of the Cardinals.

American Idol Alum Jordin Sparks was also spotted at the game, as she sung the National Anthem inside the stadium. As Entertainment Tonight noted, Sparks is no stranger to the NFL as she is the daughter of former New York Giants and Dallas Cowboys cornerback, Phillippi Sparks.

The couple only officially announced their relationship in November, but since then, they have already met each other's parents and friends. People noted that Blake has even already had approval from Gwen's three children with estranged husband Gavin Rossdale -- nine-year-old Kingston, seven-year-old Zuma, and 22-month-old Apollo.

Just before Christmas, the pair was also seen in his home state of Oklahoma, where they visited a home-goods store that Blake used to frequent with ex-wife Miranda Lambert. They also took a trip to Dairy Cream for some ice cream, as reported by the Hollywood Life. The outlet noted that their Oklahoma trip is an indication of how serious they are becoming about their relationship, and with all the cutesy posts that include smothered kisses and matching outfits, that comes as no surprise, either.

What do you think of Blake and Gwen's cutesy string of dates -- are you pro their relationship?