Dating is all about figuring out if you want to move towards a more lasting commitment.
Seems to me that she isn't worthy of you. Her actions are not the type of actions you want in an LTR with - right?
Sounds to me like things were really great and fun in the beginning - all R'a are like that during that beautiful rosy courtship period.
And you fell for the woman that she presented herself to be during that rosy period. And now well- you are finding out she isn't that person and are clinging to what you want her to be - what you thought she was during that rosy period.
There was a thread roughly 4-5 years ago where oldtimers started a thread about how much that first post D break up hurts. Everyone was floored as everyone shared how that it hurts MORE than the D!
Are you seeing a C? It might be helpful to talk this one through with a C - to help alter your mindset from "the perfect woman dumped me" to "this imperfect woman did me a favor by dumping me." This woman was not your last chance at happiness. It just feels like that right now.
I went through the same thing with Erased Man. He was also from the BB - you get that whole shared D pain intimacy thing going and feel so understood - feels so good after a spouse walks away. He read all my posts and knew exactly what to say at that time and I fell for those words that had no connection to his actions hook line and sinker. And now 5 years later - I wonder if I was nuts for ever even being attracted to such a screwed up man. So he no longer counts and is irrelvant - hence the name Erased Man.
I got through the first post D R pain. So did about a dozen other people that posted. You will be fine. Just keep taking care of yourself and slowly ween yourself off this woman.