@lice~~
I am glad it you are okay now or at the very least, better. If you need to talk you can always PM me. Of course if you don't mind my .. err straight forward way

Oh and don't bother on revenge. It waste way too much time, oxygen and effort. He's simply not worth anymore of your attention (good or bad). Go enjoy your life and live for yourself. After all, we must love ourselves before we can love others.
Cheesenium
Sometimes it's not about understanding a girl (I am a girl and I don't understand them). It's about looking at the situation and understanding how things work. Often people who are too blinded by love and affections fails to look into the most logical thing, even if it's right in front of their eyes. The logic is really simple, when someone starts avoiding you at great length (guy or girl) chances are, they don't want to be with you. Simple as that. You can try convincing them, but if they are adamant, then it's time to move on. You can blame them for being hard to understand or even convince yourself she's playing hard to get, anything, but it's not going to change anything.
(p/s: I personally find it annoying to avoid people who are chasing after you just because you don't want to recuperate their feeling. Just tell them already, it's so much more efficient! He won't bug you any longer and you don't have to get fed up of him not getting your signal right.)