The Voice coaches Blake Shelton and Gwen Stefani are one of the entertainment industry's powerhouse couples. However, they are not ready to get married.

What's The Hold-Up?

Insiders close to the couple have stated that getting married is not a priority for them. Stefani and Shelton have been focusing on raising Stefani's three sons with rocker and former The Voice UK coach Gavin Rossdale. According to Entertainment Tonight, 11-year-old Kingston, 9-year-old Zuma, and 4-year-old Apollo adore the "God Gave Me You" singer and revere him as a second father. They have also stated that the duo's bond has exponentially increased since they officially started dating in November 2015.

"They are on cloud nine for each other. They are perfect for each other. They know they have found their true soulmate," said the insider to Entertainment Tonight.

Impressing Kelly Clarkson

Kelly Clarkson, the latest member of The Voice family, has already been charmed by the chemistry between Blake and Gwen. Clarkson's husband, Brandon Blackstock, is the "Honey Bee" singer's longtime manager, and the quartet often went on group dates. However, the "Hollaback Girl" performer surprised Clarkson when she gave the "Medicine" singer-songwriter a tour of her Beverly Hills mega-mansion. Clarkson stated that she felt like Vivian Ward, Julia Roberts' character, in Pretty Woman.

Vegas And 'The Voice'

Another reason why the duo decided not to tie the knot is their respective careers. Shelton has been filming the NBC singing competition with Clarkson and fellow coaches Adam Levine and Alicia Keys. Meanwhile, Stefani is in the early stages of preparing for a massive Las Vegas residency. E! News reported that a source close to the "Baby Don't Lie" singer-songwriter was thoroughly mesmerized after seeing Jennifer Lopez perform at the Planet Hollywood Resort. However, Stefani also took her sons into account in making this decision.

"There's flexibility that comes with doing a residency. She'll be able to come in and out of Las Vegas for a couple weeks at a time throughout the year and she'll never be too far from home," said a source to E! News.

Family Escapades

Stefani and Shelton have been very creative when it comes to their adventures. The couple transformed into Daphne and Shaggy for Apollo's Scooby-Doo themed birthday party. Last month, Shelton and Stefani took the three kids to the Super Bowl in St. Paul, Minnesota to commemorate football's biggest night. Stefani also performed at the Mystic Lake Casino & Hotel following the Philadelphia Eagles' victory over the New England Patriots.

Tags: Blake Shelton Gwen Stefani celebrity couples