Sandi Do you read male game blogs?! I mean you sure use all the vocabulary. In any case she is spot on. I don't think denying sex is a good thing, but if she ever pulls this crap again just look at her in the eyes wink and say:
SUUuuureeeeee.....
Don't be afraid to tease her a little. Stand by your ground, and if she ever acts like she's unsure about you two, as calmly as you can tell her you understand if things won't work out and give her SPACE.