What turns your man on?

My guy and I had some pretty intimate sex the other night and afterward he said, "You know what really turned me on?" He never says stuff like that so of course my interest was peaked! He said it was my engagement ring that did it, because he saw it and loved knowing that I was his. Not in the controlling way but the "wow I get to spend the rest of my life with you" way. I thought this was so sweet! I wanted to share :) What stuff like this turns your guy on?