<human>: Can you condense the text into a few key points?

Me and my now ex both live on the west coast and both attend large universities about an hour and a half a part. We had been dating for 2 years and had our fair share of ups and downs that we would always get passed.

However, as freshman year has went by she has gotten into Meth. I have tried to help her in a positive way but she always just seemed annoyed or angry when I did.

Now, this past Friday she admitted to lying to me and dating 40 year old men for money. At this point, I know not to go back to her but as a male I feel so inadequate for not having a stable career and income like these 40 year old men do.

She was my best friend and I never imagined breaking up like this. I'm really fucking hurting and I cannot stop thinking about her. I am trying to let this go and move on but I feel like it is impossible. I feel replaced for gross attention, money and drugs. She really doesn't believe she has done anything wrong either.
<bot>: SO cheated on me for money, drugs, and old men and I am having trouble forgetting about her. What should I do to help me get over her?