There is one thing I want you to keep in mind that I have been telling others on here for some time now. (few listen though)
This works best when you are having social interaction with a member or members of the opposite sex. She needs to feel that there may be a member of the opposite sex that is now turning your head and getting your attention. Do NOT underestimate the power of competition between two women and one man... This is why she seems to be moving toward you now. Secretly she knows that when a man suddenly stops giving his attention to you, then she immediately "assumes" and suspects there is another woman.
Make sure to have your social interactions in full gear...
Of course, you are "only friends"..... 