US pop band Jonas Brothers' mother "prays" they stay virgins until they're married. Denise Jonas – whose singing sons Nick, Joe and Kevin wear chastity rings – hopes her boys won't give in to temptations of the flesh, but vows she "won't hate them" if they do. Nick, 17, says his mother taught him and his brothers everything from politeness and proper table manners to how to behave in hotels. Even though Denise runs a strict household, her sons adore her and Joe, 19, claims any future girlfriends must love her too. He said: "People always ask: 'What's a girl have to do to get your attention?' I say: 'She has to be good to mom.'"