Clever !

I thought this meant something the first time I saw it, even if you can only see the one party known to me and the other one known only to her from behind. They are clearly holding hands while walking on the street at night! Is this interesting to my sister perhaps? Or to my nephew (of whom perhaps some uniform shots my soon appear here)?

Thanks and credit to Darth Rachel, who took the photo in Barcelona and flickered it under this link.