You may have felt like you were in the honeymoon stage, but different people come out of it after different time periods, so he may have no longer been in that phase already. Some guys can be like this (especially if they haven't many relationships before), where they think too logically and realistically, and aren't able to actually put themselves into an emotional sense of understanding their female partners better. You might honestly want to consider moving on and dating someone else, because he has seemed to disconnected himself from you already, and may have even moved on the moment he broke up with you.
One of the most devastating mistakes you can make is trying to force it to work with a guy who is wrong with you. I’ve seen people spend years of their life trying to shove a square peg into a round hole. Everyone in their life tells them to just move on and let him go but they can’t. Why? Because they don’t have clarity or any objectivity because they are still sucked into the emotional whirlpool and have yet to break themselves free. <<<<