Thanks for the comments.
I've tried doing it in several different tone variations, but this one seemed the post visually appealing. The left part is overexposed, but if I try to repair it, the whole picture loses a lot of it's magic.
I like how the positions of their legs let us imagine their emotional state - she seems to be slightly anxious as to how things are going, and he seems to be trying to play it cool.
Adding in hands might actually be a good idea. Sadly, this is a (almost) non-cropped shot, so I wan't be able to do it. Taking this one without looking like a pervert was an effort.