♪ don't wanna be a fool for you ♪ ♪ shoot me, hate me, but it an interno lie, baby bye, bye, bye ♪ >> it's really cool! [ screaming ] >> in the first week alone, "no strings attached" sold 2.4 million copies, making it the fastest selling al bull of all time. ♪ much better ♪ once you're gone despite the growing frenzy, the growing bank account, and the growed adoration of millions of fans -- >> reporter: how much do you like 'n sync? >> a lot. a lot. a lot. >> those close to justin say his feet never left the ground. >> you know, when people get this big in this business, sometimes they get a big head, and their entourages start to grow. they become in a situation where they're unattainable and you