Because deep down, he still has feelings for you. Those warm and fuzzy feelings are stuffed way, way down into his soul right now because his issues have pushed them down there. Eventually, if he faces his issues, those warm and fuzzy feelings may very well rise to the top once again.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.