I think Denuseri hit on something important: it's always good to add a level of playfulness to your relationship, especially if you enjoy being snuggly/sweet and only want to be firm when it is absolutely necessary. Such creativity leads to feeling more like you're in the Domme/sub roles, without making play scary or rough. My Pet particularly does not like a lot of the things I do to her because they cause pain; however, she DOES like them because they make her "feel that she has been put in her place" by Me. Does he share her sentiments? Want to be put "in his place"? Or is he simply seeking to please You? Questions, questions, questions will help Y/you both develop this new facet to your relationship.
Have fun!!