Take advantage of the awesome stories on this site. Find some topic that you really like, and create a 'storytime' with him. Expose yourself in your most submissive state, and read the stories to him. Take advantage of the stimulating affect that this will give him. In short, fantasize with him instead of with your vibe. You may find that he reacts very well and he simply needs your confessions to know what is okay with you and what you are needing.