He hasn't actually left.
best future ever he will be the best superstar john cena rocks
He Joined on the 27th of June, 2002
he is basically the future look at him now.
John Cena appeared on the Smackdown brand when he joined WWE in the spring of 2002. My Source: My memory.
john cena did get rehired
the Miz Defended the WWE Title
John Cena,MVP,Drew Brees, and more WWE superstars
yes John Cena will win the wwe championship at wrestlemania 29
yes.
yes john cena does have a girlfriend.
john cena will return in 2011
in 2009 edge beat john cena and became wwe heavyweight champion