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Sam Smith got MARRIED ... SURPRISE!

JUST KIDDING! Sam made his Instagram followers do a double-take on Tuesday, after posting a photo of himself wearing a silver wedding band on his left hand. The "Stay With Me" singer teased fans further with a caption reading "SURPRISE" ... but then "joking" in parentheses. 

SURPRISE (joking)

Sam Smith(@samsmithworld)发的照片 ·

The Instagram prank could also have been a jab at British tabloids like The Sun, which has been reporting that Sam has a new man in his life.  The paper started rumors that Sam was dating one of the extras in his video for "Like I Can." The singer recently responded by saying that he "[hasn't] even confirmed with him that we're officially seeing each other." 

As for his little prank ... good one, Sam!