Okay, i played the game on PC and i cried a a lot. Anyways, i think i know what happens to lee. I was browsing stuff people posted on a (i think unofficial) Robert Kirkman Facebook page and noticed this picture:

that this guy put on Robert's (i think it's unofficial) page EDIT: Apparently this photo was on reddit a while back. I was thinking this could just be an Easter egg or coincidence or something more... I think Robert Kirkman meant to show that image with that particular zombie in the image... consider the zombie on the right most side has the same facial structure, the same clothes, ect. there is strong evidence to back the theory that Lee is a zombie in Season 2. So in the last gamespot interviews of Playing Dead, Shawn, one of the writers for the game said this when asked about "Lee?" (The question the interviewer asked the 3 about...) in season 2:
"Lee's corporeal form didn't denigration" Jake (director of some parts of episode 5 and one of the designers of the game) followed by saying this:
"So it will exist somewhere in the world.". All this can be found
here on this youtube video So... What does this mean? It's simple... Lee is reanimated in Season 2! I think (even though this is just 2 pieces of evidences) that this proves Lee is reanimated in season 2. What do you guys think of this?