i see your point but he's not brad pitt and dating angelina jolie... i doubt there would be mass media intrusion or the paparazzi harassing him to get a pic all the time???
You don't have to be Brangelina to hate getting a lot of attention. I definitely think the media - and his fans - would be all over him. So no maybe it wouldn't be the worldwide scale of Brangelina, but it would certainly be bad enough for any sane person to want to keep it as private as possible. It's not rocket science. He wants a normal life with a normal girl and he's gonna do anything and everything to try to preserve it. Ever done a Yahoo News search for Andy? Try it, the top two "other searches" that come up are for 'andy roddick mandy moore' and 'andy roddick maria sharapova' day after day. Sure, those two girls are famous in their own right so it'd be worse, but if you think that the tennis world wouldn't make Andy's life hell about a girl they knew nothing about, that they were trying to find out about, then you're really underestimating it.
i just doubt he keeps one long enough to call her a girlfriend!
fine, think whatever you want.