EXCLUSIVE: Demi Lovato Reveals Wilmer Valderrama Had 'Some Hesitations' About Their Age Difference

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According to Demi Lovato, Wilmer Valderrama once had some major reservations regarding the 12-year age difference between him and his girlfriend.

The 23-year-old "Confident" singer spoke to ET at Tuesday night's Stella McCartney Autumn 2016 Presentation, and clarified that "6" Instagram shot she posted with her 35-year-old longtime boyfriend was NOT an anniversary picture.

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"Everyone thinks its our six-year anniversary," said Demi, noting that actually, "We met six years ago!"

PHOTOS: Demi Lovato and Wilmer Valderrama Celebrate Six Years Together With Romantic Selfie in Bed

Demi explained that although she knew she "loved him when [she] met him," their age gap was initially too much for the That '70s Show star.

"He had some hesitations," Demi revealed. "Once I got older, we could be together.

"He's my best friend," she added.

WATCH: Demi Lovato Goes Topless With a Banana, Talks Instant Attraction to Wilmer Valderrama

Now, in 2016, everyone is busy wondering when Wilmer is gonna put a ring on it! In December, Demi told ET that the two are not secretly married, and that she has "no idea" when the actor will propose.

"You've gotta ask him," she explained.

Fair enough, Demi!

Watch the video below.