she cheated on her boyfriend with me.

I can tell you from experience that her ceasing to want to see you, for whatever reason, is one of the biggest blessings you could have gotten here

Trust me. Anything more than this will always haunt you in a relationship with her.

Under no circumstances would I ever help you try to salvage this. I just learned a very, very hard lesson in my personal life, and I wish someone would have stopped me before I went down that road

is there any way to salvage this?

A better question is, why would you want to?

Essential reading from the Rational Male year one, which is on the sidebar: "Rooting Through Garbage" by Rollo Tomassi.

If not, would anyone have an idea as to where I went wrong?

[and from earlier in the post] Maybe I was too much of an "asshole" and didn't show enough beta qualities to keep her around longer?

1) you tried to show any beta qualities to a woman this soon who can't have possibly earned them

2) you cared about a relationship more than getting sex and vetting the woman who was giving you sex. Read (or reread) HumanSockPuppet’s Guide to Managing Your Bitches, especially this passage:

A long-term relationship CANNOT be your end goal. You can only be OPEN to the possibility of having one.

Men are the gatekeepers of relationships. Since a relationship is what you have to offer, you mustn’t just give it away. It must be a reward she earns in small doses for inspiring your trust and devotion.

I understand that many of you want a LTR with a good girl – sometimes a series of flings isn’t enough to fulfill you. Believe me, I sympathize.

But winning a LTR is HER problem, not yours. Handing a girl your devotion won’t magically make her worthy of it. When you WANT a LTR too badly, you place your focus on the idea of having a relationship instead of evaluating the girl. You become fixated on your fantasy relationship and selectively ignore the things happening right in front of you: her deep character flaws, her indiscretions, and the red flags.

You must regard women as candidates applying for the job of being your girlfriend – a supporter, a lover, a comfort away from the everyday battles. Don't just hire a bitch because you want the position filled. Make sure you vet your candidates fiercely and hire the right girl for the job.

3) you have oneitis

4) you did 1-3 with a woman of poor character. Generally speaking, if she's willing to cheat with you, she'll cheat on you.

Maybe I was too much of an "asshole" and didn't show enough beta qualities to keep her around longer?

actually she sounds like just a bit of a cunt.

she cheated with her bf..... then she complains about you.

salvage.

Look....... she's a bit of a cheating cunt..... you need abundance, you need other women. You don't need to try and make it work with a girl you FEEL TOO MUCH EMOTION FOR.