Great concept and it nails the challenge. 2 nitpicks though...
1 ~ The horizon id severly sloped and I don't feel it adds anything to the shot.
2 ~ you could take a lot off both the left and right and lose nothing. I feel that losing the left to the fence pole and losing the right to the volleyball net post (or even closer) would have left you with a much stronger image.
Not having it been a sunny day helps this picture in a way as it gives it a more "real" feeling, that there are ups and down in life and love as well. Overall its a nice picture.