A rep for Demi Lovato is denying rumors that she and Wilmer Valderrama are engaged.

Recently, Demi Lovato posted a picture on her Twitter sporting an apparent engagement ring on her left hand and shortly after commented saying “I don’t think I’ve ever been happier in my life than this very moment that I am fully living in…”

This sparked up rumors that she and on-again-off-again boyfriend, That 70s Show star, Wilmer Valderrama may soon tie the knot.

Lovato, 21, met Valderrama, 34, in 2010 and have been seeing each other on and off for about four years. For his birthday on Thursday, she even posted a collage picture of the two captioning it, “To the funniest, most inspiring, incredible man I know @WValderrama – thank you for helping me get through my darkest moments.”

A representative for the pop star recently denied the rumors of an engagement to Us Magazine, saying that the ring she was wearing on Wednesday is not an engagement ring, they said Thursday.

Photo Courtesy of WikiMedia Commons