Thats the problem, you are thinking about her, i used to do that a lot, but now i think about my own interest, right now i am dating this hottie and my mindset is "is she good enough for me", so i am not thinking about pleasing her, saying everything right, or if shes interested in me or not, i think of her as a friend and she has to show me if shes got what i need. Women sense this, just like we can, and feel more atracted to you because they know you don't need them.