The lovebirds couldn't help themselves from joining in on the fun!
Is Gwen Stefani about to become the next Mrs. Shelton? Not so fast!
On Sunday, Blake Shelton was caught leaving a grocery store in Studio City, California, where he was asked if he was going to start a family with Stefani.
WATCH: Gwen Stefani & Blake Shelton Exchange Flirty Messages Over Twitter
"I think it's awfully early to be talking about that, don't you?" the 39-year-old singer responded.
Shelton did say that he and his girlfriend are happy together, but noted that they don't have plans to be permanent roommates anytime soon.
Even though they're not moving in together, The Voice coaches still proved that they're a picture-perfect couple while attending the wedding of Shelton's stylist, Amanda Craig, in Nashville, Tennessee, earlier this month.
Craig married Joel Borski on Jan. 9, and on Sunday, she shared photos from inside the reception's photo booth. Lucky for the bride -- and us! -- the No Doubt frontwoman and the country crooner made an appearance.
In one of the photos, Stefani, 46, and Shelton squeezed their way into the frame, which was mostly taken up by Craig's oversized red glasses and another guest's rabbit ears.
The "Used to Love You" singer made her way front and center in another pic, while her beau offered up another funny pose.
A day before the wedding, the lovebirds were spotted at O'Charley's restaurant in Nashville, and a source told ET that they were "all over each other."
The trip was just another stop on the couple's frequent travel adventures as of late. In December, they spent time in Anaheim, California -- Stefani's hometown -- after spending Christmas together in Blake's home state of Oklahoma. They also were seen at an Arizona Cardinals game in Glendale, Arizona, and a wine tasting adventure in Buellton, California, over the holidays.
WATCH: Gwen Stefani and Blake Shelton Continue Their Travel Adventures, Get Cozy in Nashville