tell her that u r not a lesbian
You say. >> Its not you Its me! "
Tell her you got dumped not long ago and you don't want her to be the rebound girl.
You are allowed to be not interested. Just be polite and say no thanks. :)
Accuse her of something like stealing your vibrator.
Her feelings are her problem; not yours. Tell her in certain, unambiguous terms, so there can be no room for misunderstanding.
I'm having the same problem..