@PBSandwich Yeah, don't ever go telling somebody you're into that you like to flirt with lots of people. I get it, it's a defensive act and we all do things to protect ourselves, but it undermines and makes them question the signals that they're otherwise picking up from you. Almost everyone prefers that people be straight with them though. She would probably even really appreciate if you came clean with her and told her outright that you like her and why you didn't - being able to show vulnerability is an admirable trait and if she cares about you at all (on any level) she will at very least likely respect your honesty and bravery.
Whatever happens, I'm glad I was able to help offer some insight. Good luck to you both.