I wouldn't be contacting him again now, I would wait for him to contact you again, otherwise you will look like you are pursuing again particularly as it all ended the way it did.
He obviously noticed the changes in you which is a good sign but it is this keeping the emotions and impatience in check that is hardest for us.
I know it is hard but try not to dwell on how bad it turned and try to focus on the good points and learn from that. Remember more of what works and less of what doesn't.
