Did Demi have a problem with Nick's ex?

Tell us how ya really feel, Demi Lovato! During an interview, she admitted that she wasn't the biggest fan of Nick Jonas' ex-girlfriend, Olivia Culpo. "When he was in a relationship, I was like, 'Get out of that!" she admits. Then, when the two broke up, Demi had even stronger words to share. "I go, 'Honestly, I didn't like her anyway," she recalls. "It's not because she's mean or anything, but he has such a great sense of humor and I want him to be with someone who makes him laugh. I can tell if something's up because he'll close off." Wow. Well, one thing's for sure- if you're friends with Demi, you can always count on her to speak her mind!