<human>: Can you succinctly summarize the text in 1-3 sentences?

So we have been broken up for about 6 months now. However 3 months ago we decided that we were going to try and make it work again, I now live 4 hours away from her in another state so I drove to visit her, stayed in a hotel and went to a concert together, and we had an absolutely wonderful time, we did that once more about a month and a half ago. Shortly after I left(about 2 weeks) she called me and said that she just wanted to be friends( this is not long after confessing her love for me, never wanting to leave/hurt me, etc.)

So fast forward to 3 days ago, she cuts all contact with me and makes a post on a forum that we both frequent asking for advice on how to cut all ties with me, that she is seeing someone else, etc.
I was heartbroken, here I was thinking that she was just taking some time to gather her thoughts, and let her life settle down more( she has a new really stressful job).
I kind of broke down and called her a lot, texted her, and made the mistake of replying to her post on the forum, which got me perm banned from it.

She finally spoke to me yesterday and told me that for the last month and a half she has been seeing a guy that she works with, and that she wants to see how it goes with him...
I understand why she is doing that, and I want to respect her choice, but I am dying on the inside, I feel betrayed and I am more depressed than I have ever been.
She told me that she loves him, that he's a great guy, even has a bigger dick than me. I mean ouch.
So I guess my question is how do I move on from this?
She says she still wants to be friends and all, but I am in so much pain whenever I think of her being with another man.
<bot>: GF of 7 years left me, said she was going to try and make it work with me, then started sleeping with another guy. Help.