Don't listen to the bitter MFers on this board. Stay far away from all that redpill and MGTOW garbage. Going in that direction would lead to you becoming a worse person instead of just revealing her character.
Similarly, don't go for any type of revenge as that just brings you down. Revenge will just turn this into a dramatic saga and you'll lose the moral high ground you should have.
Don't waste someone else's time by using them as a rebound or revenge unless you're very upfront about it because that's just a crappy thing to do.
You should take stock of your life and where you are. Focus on yourself and self improvement for awhile. It could be in terms of friendships, jobs, hobbies, fitness, whatever, but do something positive and growth oriented. Don't wallow, don't look back, don't look down on yourself. Become a better person for yourself and eventually it'll become clear how it wasn't your fault and how this is a chance to get something real in the future.