Hey everyone, I'm new to this forum and really the whole ideals and philosophies of pickup-artist, and have come to terms with the fact that I SUCK at picking up women

anyway here is my situation/question

I met this girl where I work, which itself does not present a problem because we are both young and not "professionals" where we work (i.e. summer help). But we talked every time we saw each other and she really seemed interested, which I was mildly in her. the talking/lite flirting continued and I met this other guy who goes to school with her and knows her. Upon telling her that he met me she messaged me on facebook and we ended up swithing numbers and she invited me to a party, which was a couple of weeks away. During that time we texted everyday with flirty little messages about school and such. When I attended the party she was so drunk that she could barely stand and pretty much blew me off the whole time (maybe playing hard to get? idk). and now she hardly responds to texts and yadda yadda yadda, same old story.

any ideas? what I did wrong? what I could have done better? I don't really feel like I was too needy or anything, quite the contrary perhaps