That's too bad. Maybe you should BUY the game. Or maybe GameFly should give you the ONE-TIME code that comes with new games, so you can essentially screw everyone after you that rents the same game JUST so you can get your online jollies for the 1-2 days you're actually going to have the game in your possession.
Online servers cost money, kid. You're not automatically entitled to it.
Listen to mobilemouse and... BUY the game! I am so tired of telling people to just buy the damn game and go on with life. You can however buy the online pass on the market place which would become useless once you send the game back.
Oh and in response to your comment... Mobilemouse tells the truth, deal with it.