First up the black and white processing, of course it seems like the obvious route is to stick with colour and make the most of the warm tones but back lit, low light images can have added drama when you remove the colour altogether. It also brings more softness and therefore more romance. I love that rim light that gently surrounds them and picks them out from the background plus that almost kiss. I also really like that he has chosen a frame where the focus is on her shoulder. It reminds me of last year's overall winning image from Zoë Campbell. This is very tender and very beautiful.