This is a great shot for this challenge. The only thing that takes away from the effectiveness of this shot is the highlights on the right that appear to be starting to erase the models from the right. What was this - a sheet?
While I don't think this is an exceptional photograph.. .the feeling it portrays bumps up the score quite high. If the focus were more on her face than on the hand with the ring, it would be better, IMO. But, as it is... it's still beautiful, telling image that makes me feel what I think they're feeling. Well done.
I like the contact the girl has made with the viewer even while her position with her head and hand on his chest implies intimacy. I'm undecided about either direction of his look or the position of his hand. Both seem somewhat out of place (his hand just looks a little odd to me). And the white on the right... I can't decide if the "negative space" here is working for the image or against it.