Funny, I just had an encounter with one of my exes the other day. We dated for about 3 months a few years ago and she pulled the whole "cold and distant" routine on me. I dropped her immediately and went NC after she flaked on a date.
Anyway the whole encounter went pretty well. It was at a party and I just treated her the same as every other girl there. She was def acting weird around me and very quiet. The annoying part is she knew I was going to be at the party which was at my SISTERS house and she came anyway. I have no idea why nor do I care.
If anything I gained respect points with her but for the most part there is no win to be had in this situation. One shot per woman per lifetime.