Composition wise I really like this photo. The pose looks natural and like it was straight out of the movie which I really like.
The exposure here is a little off, Eric's shirt is almost completely blown and there is little detail in the shirt because of it. His cheek is also a little bit blown out too. I know that it is supposed to have the golden sun look but to me it looks like it is there is just a yellow tint over the whole thing and that makes both of their skin look unnaturally yellow. I'm not sure if you meant to or not but there is a slight purple vignette around the left and right borders that looks off, to me at least. It could have happened in camera or been added during editing, I don't know but I'm not a big fan of it. His hair also looks a little purple. One last thing, on the under side of of Ariel's left arm there is a red color cast from her hair.
Overall I really like the picture, there is just a few technical things that could be improved upon. Great job!