Work things out or not?

[hookah]

So, I've been seeing this girl for a couple of weeks and we've had sex twice including the first night I met her. To be honest lately I've mostly just been wanting to have sex with girls. I say that as preface to my story: I was at a night club on Friday night with some friends. We were all dancing and I was going up to women and starting conversations, flirting, the usual. Then I get a text message from this girl I'm seeing and she said she was in the night club too. I go and look for her and find her flirting with a couple of guys. I say to her, "Well, I'll leave you alone with these guys," thinking if she wants to be with me then she'll follow me, but instead she lets me walk away. Then, as I'm leaving I see her outside with the same guys and I make eye contact with her and she still doesn't come to talk to me. So I leave and say "Screw this girl". Well I couldn't sleep that night hoping that she would call me or text me to explain, but she never did and that made me delete her as a friend on facebook and further solidified my feelings. She ends up calling me twice on Sunday night. I didn't answer. Then, tonight (Tuesday night) she text messages me saying, "Why did you delete me on Facebook? I am sensitive to what you did. Don't do stuff like that to me." So a couple of hours later I decided to call her and tell her how I feel. I told her I am not her boyfriend and have no right to tell her what to do, but I don't like people who disrespect me that way. She said she was sorry, but didn't explain what she was doing with those guys. The conversation ended abruptly, like it was over between us. Then, I texted her saying I am willing to not hold on to this, but that I had to tell her how I feel. She texted back that she apologizes , yet then told me to "Have a Good Life". I have started to tell myself I have no right to really even care because I am doing the same thing she is by picking up on girls myself, but shouldn't she have some decency to do it when she knows I'm in the club too? I am starting to think I am suffering from one-itis, but I'm also dating another girl at the same time. Is this one-itis? Should I just move on or is this an opportunity to learn something?