Lets see... he still needs to win AO Men's Doubles. I've heard that they two were to retire in early thirties, but paes (or bhupathi) spoke with the other to prolong the career. I read/heard this in some news, dont remember.
BTW, Paes had said that it would be difficult to continue playing tennis in 2010 and yet he's continuing. So their decision might change.
I'm 37 years old. I can't keep playing tennis for the rest of my life.