I have worked with this guy for 4 years. I'm his boss. One day I realized I fell for him before I even new it. We have a good friendship and hang out outside of work occasionally. We have very suttly communicated our liking for each other, and its very clear to others who see us together. I would like to make the first move but afraid it may scare him away, with him being 6 years younger. What to do ???