Watch Gwen Stefani & Blake Shelton In Sweet Kissing Session: Country Crooner Charms Her Kids As Romance Heats Up

Joanne Eglash

Blake Shelton and Gwen Stefani are piling on the PDA to disprove all those who claimed that their romance on The Voice was just showmance for ratings. Whether they're cruising around Hollywood beaming at each other (which may not be the safest way to drive, but it sure is cute) or locking lips at parties, Blake and Gwen have been heating up their romance even more since the finale played out.

And for those who still want proof, a new video shows Shelton giving Stefani the sweetest kisses as an early Christmas gift, reported Fox News.

The Twitter video that went viral reveals the two in matching outfits with Blake bestowing kiss after kiss on Gwen's cheek. Her grin says it all.

Shelton and Stefani have been taking their romance to the next level in multiple ways. They headed on a jet to Nashville, where Blake proudly cheered for one of his Voice graduates, RaeLynn, as she celebrated the joy of being engaged to her fiance Josh Davis.

In addition, Shelton spent time with Gwen's father, Dennis Stefani, at the family home.

The outgoing, cheerful nature that Blake possesses wowed the little boys, an insider told People. Stefani and her ex Gavin Rossdale's sons range in age from 9 years to 22 months. The oldest is Kingston, the youngest is Apollo, and the middle child, Zuma, is 7.

"Blake loves kids and has been having a lot of fun when he spends time with Gwen's kids," revealed the insider. "They adore him."

"They're just having fun and enjoying each other," shared the source. "There's no pressure. They've been able to support and relate to each other and have gotten through a very difficult and now triumphant time in their lives."

Sporting wildly crazy Christmas sweaters, Blake and Gwen posed for a picture with RaeLynn. She shared her appreciation for her coach's role in hosting her engagement party.

"They were extremely friendly to everyone at the party and fit in just great. They acted normally and were very down-to-earth, regular people. Both of them together were the life of the party. They didn't show too much PDA, but you can tell they were a couple and very into each other."