anyone who would toy with your heart so easily isn't worth the hassle. Either she really likes you and is too nervous to do anything, or she's a cold heartless flirty bitch. But, you must find out. Don't simply "get over it","get through it".
Ask her if she likes you. That should tell you all you need to know. Don't say she's been flirty or leading you on, and don't ask for a date. Ask if she likes you.