Lovely portrait, great lighting and composition. I love the motion captured here and it really adds to your photo. I imagine he's saying something to make the girl blush. Got me thinking, so, excellent work.
I think it is a very nice picture, with great light, but I don't like the motion blur effect here, it doesn't seem to enhance the picture, it looks like he is rubbing her nose.
Sorry, but i'm not overtly keen on the motion of the fingers ; looks like the girl is being gently slapped on the nose. This would in fact be a FANTASTIC picture if the hand were not there at all, and if this was not a motion blur-type challenge. It's a truly lovely picture, but sadly is not enhanced by MB. The black and white style here is totally suitable, and it looks really good. Any other challenge minus fingers, 9. Unfortunately here I can only offer 7.
Subtle use of motion blur in an interesting portrait. Composition a bit messy - the left hand area (his shoulder and background) doesn't add anything and infact, because only her head is included, makes the proportions between them seem too out of balance. I'd crop the left a lot to make it a squarer image. Lighting is a touch harsh for my tastes.