Demi Lovato Mum On Engagement To Wilmer Valderrama; ‘Skyscrapper’ Singer “Forgets” Smoking Pot With Ex Joe Jonas?

Demi Lovato is still mum regarding his rumored engagement to on-and-off boyfriend, Wilmer Valderrama but the "Skyscrapper" singer already said her piece about Joe Jonas' confession that they used to smoke pot together.

Demi Lovato posted a photo of herself holding a cup of coffee in Austin, Texas while in town with her beau. But there's an interesting detail to the photo that was noticed by not a few people.

Demi Lovato was wearing what looked like a wedding band on her left ring finger, sparking rumors she's now engaged to beau Wilmer Valderrama.

HollywoodLife.com even suggested that the pair could have exchanged their vows on January 29 while she visited him on the set of his TV show, "From Dusk Till Dawn."

The website also claimed to have tracked down a saleslady from Tiffany & Co. who reportedly sold Wilmer Valderrama a ring right before Thanksgiving.

The saleswoman claimed that the "That 70s Show" star chose a "classic, beautiful ring."

"Demi is going to be a happy girl when she gets it. He didn't say what it was for but he was really excited and happy - he seemed like any other guy getting ready to pop the question," the report quoted the employee as saying.

But E! News reported that Demi Lovato and Wilmer Valderrama are not engaged, claiming that the band was just another accessory.

The news website cited as source "the star's rep" who denied the reports about her engagement to Wilmer Valderrama.

While Demi Lovato was mum about the rumored engagement, she did however open up regarding the earlier interview with Joe Jonas who claimed that both she and Miley Cyrus pressured him into trying out pot.

The full interview with E!'s "Beyond Candid" hosted by Guilana Rancic will air Monday but a one-minute clip showed Demi Lovato addressing the issue.

"Well, he had warned me, like, a couple of days before and said, 'Hey heads up, like, I did an interview and I talked about smoking pot with you and Miley.'

"And I was, like, 'We smoked pot together?' Like I don't even remember 'cause clearly I was like, I was chillin' OK, like, 'I don't remember but I'm pretty sure it happened,'" Demi Lovato said.