Knottyamy - since this is in the critique are, I've been thinking about this shot a lot more. You came here looking for help with the color. Honestly the color (and exposure) really are the issue with this image. They are both easily corrected. In my correction I went for skin tones - but it rendered the image more cool. That too can be corrected for taste.
But the real issue with this image is the background. Because of the nature of the trees, and the time of day, they came off very harsh. They take away from the subject, which in my interpretation should be soft and sweet based on the subject. The background contrasts that heavily, and is harsh, taking away from the image.
I shoot sports and news media stuff as a stringer. While focus is incredibly important, background is almost as important. One of the schools I shoot at regularly is Duke University. Their football stadium is the old traditional horseshoe type. Far too often I would set myself up in one of the end zones, and shoot the game from their. One of the things that bugged me most (still does) is at the far end zone, an ambulance would be staged for the game. I had too many shots where I think I caught great action, but that dang ambulance would find its way into the shot. Rather than focusing on the great feat of athleticism I caught, the viewers eyes would be sucked over to the red and white ambulance... not matter how great the action. They have since updated the stadium and now a jumbo tv screen occupies that space... solving my problem.... but it was something that pounded into my head the importance of the background.
It's why most sports photographers shoot even on the brightest days wide open, to defuse the background. Its something that makes professionals spend 3 or 4 x on a lenses - to get to f2.8. But even at 2.8 as you shot this, it was not enough diffusion to soften the background enough. The light rimming the trees also was against you.
When you show up to shoot a shot like this, look carefully how what is behind the subject will impact the shot. Look for backgrounds that bring emphasis to the shot. The two standing on a path or road that leads the eye to them. Its why taking pictures on train tracks is so popular. Or make sure the background is far enough behind that it goes into total blur and diffused. It is what takes a shot from a snap shot to a truly great portrait. It's a process.....and you'll get it. Environmental portraits can be a challenge..... even for the most experienced photographer..... keep at ....... maybe these two will let you shoot it again. Or just use something like PhotoShop to add a further Gaussian blur to the background.