Demi Lovato worries about fighter boyfriend before every clash

Singer Demi Lovato has said she gets nervous every time her new boyfriend, mixed martial arts fighter Guilherme 'Bomba' Vasconcelos, fights in a match.

The 24-year-old singer has been dating the scrapper since the end of last year and said she loves his sport, reported E! online.

"It's cage fighting... It is dangerous," she said during a taped appearance on "The Ellen DeGeneres Show".

"Of course (I worry about him)."

But she has no sympathy for the opponents he destroys in the cage, adding, "I don't feel bad. It's a sport.