Most Helpful Girl
Well eventhough I'm a girl,I think that your reaction was natrual and actually good. I mean you noticed that she was actually just manipulating you. That or she wanted to make you jealous of this chase dude, what a lot of girls do for some stupid reason I don't get, becuase they think that it will help them get together with their crush. Okay so, first of all, just wait a couple of weeks and then try talk to her again and first apologize, then ask her about the truth to the situation and depending on her reaction, tell her that you love her or not.
I hope I could help ;)0