Bright, You are fortunate that he doesn't lash out because some do. He is "lashing" out in his own way, i.e., not being polite, being rude. As for not taking responsibility after he said he was done, that is very typical of mlcers.
Not all mlcers display the typical behavior because it depends upon the mlcer, their issues, and personality. You might be one of the lucky ones in the fact that your h hasn't acted out or displayed some of the "usual" quirks of mlc.
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.
