Because it's Balakov (AKA Mike Stimpson) and...well...see for yourself.
"She was a promising young X-wing pilot with amazing hair. He was a simple Stormtrooper. They knew it was wrong, they knew the risks, they knew that one day she would probably help to destroy the orbital battle station on which he lived, but what could he do? Girls who like Stormtoopers are quite rare."
(Via Balakov's Flickr stream)