Demi Lovato Says Boyfriend Joe Jonas Doesn't Share Her Love For Heavy Metal

'I played it for him and he's like, 'Whoa that's crazy,' ' the Disney star said on 'Jimmy Kimmel Live.'

Joe Jonas apparently doesn't have a high tolerance for girlfriend and fellow Disney star Demi Lovato's taste in heavy metal.

Lovato, appearing on "Jimmy Kimmel Live" Monday night, said she was tired after going to see a Maylene and the Sons of Disaster concert the previous night. When asked if boyfriend Joe shared her fondness for "hard-core Southern rock metal bands," Lovato said, "No, we've talked about it. ... I played it for him and he's like, 'Whoa that's crazy.' "

While they might not agree on what kind of music to listen to (Jonas has admitted to being a big fan of indie rock band Vampire Weekend), not surprisingly, they haven't even broached the subject of starting a family. "You know, it's a little early to talk about that," the 17-year-old told Kimmel.

All joking aside, the couple will appear on "American Idol" this week, where they will sing their duet, "Make a Wave," from the new Disneynature flick "Oceans." (Jonas appeared on "Idol" earlier this season as a guest judge.) "Yes we're doing a duet. I'm afraid of Simon, so I'm good [about not being judged by him while on the show]. ... The song's coming out and it's great," she explained. "It's not about being in love. It's whatever you interpret it to be."

Lovato currently stars on the Disney series "Sonny With a Chance," but she got her big start in entertainment alongside a certain big purple dinosaur. "I was on the 'Barney' show for about two seasons. I don't [keep in touch]. You realize he's kind of a dinosaur," she joked to Kimmel.