I know you guys want him, so do I, but I had to accept the fact that some characters don't return. Now you guys will compare this to Kenny's situation, but that was something else, and this one something else.
Yes like may be alive. If you tried to save him you never see him dead but if you shoot the walkers you see him die. In the final season you might find Lily depending on how you played it so it maybe the same for him. I’m a strong believer in this theory.