The four members of JLS argue with each other -- a lot.The 'Hottest Girl in the World' hitmakers - Aston Merrygold, Marvin Humes, J.B. Gill, and Oritse Williams - don't always see eye-to-eye but are happy to sit down and resolve their differences before things get too heated.J.B. said: "We do argue stuff out. We're four individuals. "But it's like family; we can argue about whatever and still sit down at the end of the day and have a meal together."And the hunky singer admitted once everyone in the band agrees on something, they know straight away it is the right thing to do. He added to We Love Pop magazine: "Of course not everyone's going to like the same thing at the same time. So if everyone likes something at the same time, that's when we know it's right and we go for it."The group also shared their mottos for life, with Aston believing in "karma" and Marvin trusting his instincts.He said: "'When one door closes another door opens.' I'm very much a believer in the whole karma thing. What you put out, you get back."Marvin said: "'Whether you think you can or you can't do something - you're absolutely right,' Henry Ford. The guy that made the cars said that."JB added: "My mum always says to me, 'If someone has to do it, why can't it be you?'"