Sometimes the moment creates the photograph itself. The photographer just has to remember to push the button. When I was at the Sweethearts event my two second cousins twice removed on my wife's side or whatever wanted their picture taken together. We took a few photos where they were smiling into the camera when Sam decided to give Miranda a kiss. The moment caught my eye and ended up being my favourite. Lucky I remembered to push that button I think.
I used the 50mm 1/80th sec f1.7 iso 200. Flash was angled up with a Stofen omni bounce on it.