>>1 Firstly, I think you need to give yourself a slap if you think that being manipulative and vindictive is going to work. It won't. Most relationships don't work out and that's unfortunate but the best thing for everyone is if both parties just accept that it's over and move along with their lives. Trying to force her to be your girlfriend won't make her happy which in turn won't make you happy.
So please, if she's going to choose another guy then do everyone a favour and take it like a man: smile, nod your head and then go about your day.
If she's played with you then she's a bad person who you don't want to be going out with anyway. And in any case, she's now going to be someone else's problem which makes your life all the much better.
TLDR: stop being an idiot, breakups happen, her moving out of your life will only improve it, have a nice day.