What I've noticed from your other photos is, in addition to this winning smile and these sparkling eyes, you have a rather noble facial structure. The lines of your nose and jawbone are well defined and straight. The shape of your mouth is sensual but can be strong.
Your comment tag with ~SpinalArchitect is endearing, I must say. Keep that energy flowing, and keep this expression alive. You look very beautiful in this photo, and I (being the romantic I am) wish for the one you love to see it, and be given hope by it, every day you are together.