Why did he cry?

I have been out of a 3 year relationship with a major N now for over a month. We lived together on and off for 3 years, guess what? I financed it! Worst thing was we had 4 children involved.

I had major D&D with him and having been on this site, read Lisa's brilliant books and after major research, can now see that he has classic N characteristics if not full blown NPD - BUT.....once, and only once, did he cry. When I confronted him with my feelings, sobbing and telling him how he suppressed my feelings, made me feel used and under valued, he turned around and said "Maybe it's me?, You say all the things my ex-wife said, maybe I have a problem". He then cried but it was very fleeting, he then turned on his heel and said, "You make me unhappy and sad and I don't want to feel like that"! And off he walked, whistling into another room. I was DUMBFOUNDED!!

But what made him have this moment of insight? Up until that point, he was projecting all the time, even came out with the classic "you are in love with the idea of me", well who gave me that idea???

He is now with his fresh supply, 5 weeks after moving out of our joint home. I am getting stronger everyday and NC is the way forward but still I look back and think, why did he cry? Is there some part of him that knows he has a problem?

NOT my issue to solve anymore I guess!!