I guess the only thing I don't like about this photo is that if I were going to tie a couple of people up... I'd really tie them up good! This just looks like, "if they stopped holding hands for a second they'd be free" not sure if that's the message you were trying to send with this.
This reads as an 'unhappy' bond. As if they have a child which keeps them together when they dont want to be. The clasped hands show the mutual decision to keep it together for the childrens sake. Creative idea and well lit.