If you are not doing any body movements then it will be easy to catch, otherwise, people don't really concentrate on the other persons movements (unless you are trained to read body language).
You don't do LARGE movements but rather small ones, like 40-50 cm tops out from your body, depending how large you are. And even if she notice, it isn't always bad.
Before a pattern you should use a softener and what I call a pre-description:
Pre-Description
Yesturday I saw this wonderful romantic movie about two persons who met and I was just soo fascinated about it. It just said click when they met, and I started to think about that...
Softener
...You know, this may seem out of the blue but, I just wanted to ask you something to get a better understanding of you...
Pattern
Incredible connection
Final output
Yesturday I saw this wonderful romantic movie about two persons who met and I was just soo fascinated about it. It just said click when they met, and I started to think about that. You know, this may seem out of the blue but, I just wanted to ask you something to get a better understanding of you, did you ever experienced incredible connection with someone? Like that movie when... [describe]
Hope it helped
--- Awkward