Blake Shelton and Miranda Lambert are still together and better than ever -- on stage at least.

As rumors of Shelton's cheating continue to swirl, The Voice judge made a surprise appearance at his wife's concert in Bakersfield, Calif., Thursday night, just in time for the couple's third wedding anniversary on Friday.

As Lambert's scheduled concert -- co-headlined with Dierks Bentley -- drew to a close, Blake shocked the crowd by strolling out on stage and yelling "Surprise!" before launching into his current single, "Boys Round Here!" as his adoring wife looked on.

"Hope you liked the surprise!" she tweeted after the performance.

On Friday, she posted a tribute to her husband of three years: "And.... 3 years ago today @blakeshelton asked me to marry him. Pretty great moment in my life. I really like him!"

More than eight hours later, Blake had yet to respond.

He famously began his relationship with Miranda right around the time of his three-year wedding anniversary with another woman, Kaynette Gern. He later left her for Miranda.