<human>: Can you provide a brief rundown of the text in within 3 sentences?

My old post details the length of the relationship pretty well.

Basically, I never met her in person, we met online. I thought I was very happy but I think now it was kind of like a heroin addiction. I was spending most of my free time with a person who told me they loved me and seemed to have fun with me, but who I would never be able to be with in real life, at least not for more than a weekend or so.

She wanted me to cheat with her on her boyfriend/husband while she had a child with him (she said he had cheated on her twice in the past). She phrased it like this: "You give me what he cannot, and I take from him what I refuse to take from you." 

Is this not a fucked up way of thinking? Why did I think this was okay? I don't know but I wish I had just left when she told me that. 

Eventually we got in a huge fight, and I said some very nasty things to her, because she had more or less been ignoring me for a week before this fight. I called her evil and told her to enjoy her cheating husband, called her a snake and a liar when I found out what she had lied about. I thought it would help me move on. But it didn't. So a few days ago I tried to talk with her so we could part amicably, but she refused saying I had been a dick and she didn't want to talk to me.

I understand her apprehension, and I recognize the very high probability I will never speak to this woman who I loved again. I'm just upset that I acted so venomously because it ended up denying me a chance at that peace. You know? 

Should I just embrace the fact that I know she is/was a liar and that this was never a real relationship and she was just using me on the side? Should I not feel sorry for being a dick to her and just try my best to forget about her crazy ass?
<bot>: Met her online, she wanted to cheat while she got back together with her ex to have a child, we fought, she doesn't want to have a goodbye talk.