She doesn't want a relationship yet.

Here is why:

1. You are Beta as fuck
2. You are asking a forum for fucking advice so you probably know jack shit.
3. She thinks youre ugly and all the girls probably know you have a small D

She just wanted you to get the fuck away from her so she said that

You are in denial.

I don't think she likes you. That's usually my answer when I'm not interested in someone.

Dude, to me it sounds like your really into this girl. From seeing how your trying to defend her. But I've seen how girl turn down guys, and yes, this is all in their book. She might have told you that you looked nice and whatever, but bottom line your not what she wants. Girls, are dumb that way (Guys are just stupid). Move on cuz the more you prolong chasing her she will come as you viciously telling you how she really feels, and believe me that will hurt more than the excuse she is giving you.