RTL, I may be completely wrong but I just wonder by your W saying "why did you find it so hard to be nice to me" she may have been giving you an opening. Your non response might just feel frustrating to her. I know if I said that I would want to hear something like, I thought I was and didn't realize it or maybe I was too concerned with myself and by the time I woke up you were gone or maybe I took you for granted or because I became a self absorbed SOB or something self depricating. Just giving you a woman"s point of view. Now I may be way off the mark but it sounds a little like she wanted you to say how sorry you were for whatever.
