Demi Lovato doesn't have a ''type'' when it comes to dating.

The 21-year-old singer - who has been romantically linked to Wilmer Valderrama in the past - insists she doesn't fall for someone based on their looks or nationality because she thinks the most important thing is their personality.

Speaking in the new issue of Cosmopolitan for Latinas magazine, she said: ''I have [dated Latinos], but it's not important to me--I don't have a nationality preference. I don't really have a type.

''I don't think that you fall in love with someone for their clothes or their style. For me, it's about the person.''

Meanwhile, the 'Heart Attack' hitmaker admits she's not keen on singing about the sexy side of her relationships in her songs because she doesn't want her relatives to hear.

She explained: ''Sex is a part of life and it's a personal decision. Some people put it in their music, which is awesome and good for them.

''But for me, there's still that weird feeling in the back of my head that's like, 'All right, I know that my mom and dad are going to hear it and my little sister, and that's really weird for me.' But if I feel like expressing myself in that kind of way, then I'll be like, 'All right, guys--look the other way!'''