I believe subduing the sunburst would make it seem a bit more natural scene. The location is really nice. I cannot find any trace of disturbance in the flowers.
Really jealous as this is such a great location for a shot. As mentioned in a previous different edit, the knife in the pocket should bee cloned out. Overall, (just my feeling) the processing doesn't fit the mood of the scene, I would go for a softer more dreamy approach.
I like the overall concept here; a couple of thoughts on things you could have done to take this from a good image to a great one:
-Add a cut of CTO to your key light to match the ambient more closely; the highlights nearest the RH edge of the image have a distinct 5500K look to them; and
-Positioned the couple a little closer to the sun (and further from the RH edge).