Dirty

i agree that its about a girl and religion. i believe j is talking about how he was christian and believed in god, then he meets this woman and is happy, theres rumors about how his son was killed by his wife and if this is true, this song could be saying how he believed that people are good and with this happening to him he believes that everyone is the same. the woman he thought was pure and everything great in his life, has become just like everyone else that has hurt him ('Cause one n a million is all the same). This is when J becomes depressed