The Maroon 5 frontman reveals his dealbreakers when it comes to relationships. "If she says, 'I want you to start cutting your toenails more frequently,' I will say, 'Good idea. I will change that.' If she says, 'I don't want you to watch the Lakers game,' I'll say, 'Let's break up,' " admits the singer, now 30. "You have to strike a balance."