What do i do now i messed up?

Stop playing mind games with her. The only way you'll know for sure whether to completely throw in the towel is if she TRULY knows how you feel. Ask her out to a casual meal or take her to the park where you can walk and/or sit and just talk. Just tell her how you feel and how you felt--plain and simple. Lay it all out there for her so she has no doubts in her mind that she's most important to you. When she asks you about the other chic you were seeing, tell her the truth: that she was never important, that you only saw her because you thought she wasn't interested in you. She may not be interested in you, which may be why she told you she didn't want a relationship, but the the only way to get to the bottom of it and to get past all the games is to put the truth out there. That's called "putting the ball in her court". After that, just give her a couple of days and she how she acts...See if she seems to want to still talk to you, or if your news just scared her...Either way, it will show her true feelings. However: It sounds like she's constantly surrounded by guys who are interested in her. IF you and she were to start dating or to become an item, these guys will only be less of a problem if she makes it clear to THEM that she's seeing someone and is not interested in their attempts to knock you out of the picture, as many guys will do...Competing to take a girl with a "May the best man win" type of attitude...even when she's already in a relationship...Of course, this can only happen if she allows it. Just beware of her dealings with other guys who are "friends" until they try to make their move or whatever. Good Luck with her. Hope this helps some way. =)