Well, first things first. Don't read her journal anymore!
As far as your sitch, I would say to just keep being the person that will "move mountains for her". This thing with the OM will fade in time, and if you're still there standing tall she will start moving towards you again. At that time you can think about dealing with the issues that led her to this A. This guy is obviously not interested in your W so just be strong and wait for her to come out of her funk. I know it sucks, and I know it's frustrating, but there is definitely hope if you just have the patience.
A dream it's true
But I'd see it through
If I could be
Wasting my time with you
-Band:Phish Song:Waste
