Watch Wilmer Valderrama Surprise Demi Lovato in the Cutest Way Possible

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At Demi Lovato's first annual Lovato Scholarship Benefit fundraiser, held at the Troubadour in West Hollywood, the "Heart Attack" singer got the sweetest surprise.

While answering questions from her fans during a Q&A, moderated by pop culture columnist Perez Hilton, Demi was asked why she had thanked her boyfriend Wilmer Valderrama for her three years of sobriety.

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"Because I love him," the embarrassed but smiling 22-year-old said, to the loud cheers of her fans in the audience. "My heart is broken that he couldn't be here."

Luckily, she wasn't torn up about it for too long because Wilmer popped up on stage, surprising Demi in the cutest way possible.

The singer was even brought to tears as she and her 35-year-old sweetheart hugged and kissed.

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On Sunday, Demi expressed her love and admiration for Wilmer in a sweet Instagram pic of the happy couple sharing a kiss.

The singer captioned the photo, "I wish I could put into words how grateful I am for this man right here. But my love has grown to a level that words could never possibly express how much this man completes me. He's loved me the way I never thought I deserved to be loved and with this day marking my 3rd year sober... After sharing my ups, putting up with my downs and supporting my recovery... he still never takes credit and I want the world to know how incredible his soul is. I really wouldn't be alive today without him. I love you Wilmer"

Demi has openly spoken about her past issued with dangerous body image issues and drug use, and the long road she's walked to reach sobriety and self-acceptance.

Check out the video below for more from the singer on how she's learned to love herself.

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