I know how that is. It brings to mind my ex. habitually super late when going anywhere, and always when she had the car and picked me up I could expect 15 - 20 min tardiness from her. So I would still get pissed about it by the time she got there I was tense and fuming. Thing is there is one time, yes that's all I can remember, that she showed up on time. Guess what? I was still pissed already! I had gone through all the emotions expecting her to be late and when she was on time I didn't know what to do with myself and I couldn't calm down! It was too late to go back and appreciate and actually enjoy the fact she was actually on time once. >.<