Does Axel from Kingdom Hearts have a heart?

When Axel was an actual person he must have had a heart, but he is a nobody and therefore has no heart. We are led to believe that he has a heart because of his affection towards Roxas, but this must be caused from prolonged exposure to Roxas. More might be explained in the upcoming title of the Kingdom Heart series; Kingdom Hearts Birth By Sleep.

(Please. No spoilers. Wait until Kingdom Hearts Birth By Sleep is released.)