<human>: I had a falling out with a girl I was seeing for three months. We saw each other multiple times/week, talked all the time, and had sex. Eventually it got to her giving the "Let's just be friends" and "I don't want to ruin our friendship with sex" speech after I addressed some mixed signals I started to get. (and was pretty sure she met another guy or was talking to an ex again)

She was vague during that conversation and kept changing what she was saying and I had enough and just told her that If she only wanted to be friends, and nothing more, than that isn't something that I can do this far into the game and that's probably going to be it.

She didn't like that line, and quickly decided to bring the conversation to an end. I sort of sensed an "Ok, I'll give you exactly what you want" mentality from her at this point. Everything was civil though, and there was never any yelling or arguing.

As much as I didn't want to do that, I know myself well enough to know that if I continue to stick around, I'll just be hurting myself even worse down the line that I am right now. 

It's going totally against what I said, but I tried reaching out (by text) twice since then (6 weeks ago), and have gotten nothing back.

I didn't want to burn a bridge like this, and I am having a very hard time dealing with it. Especially because I'm now being ignored.

Was it selfish for me to say what I did? Did I say it wrong? Do I deserve to be ignored?

Could you distill the essence of the text into 1-3 sentences?
<bot>: How do you deal with being ignored? Is it justifiable or is it selfish to remove yourself from a "friendzone" situation?