Are these crops from the same image? For me the first has too much space on the left, the second not enough
But I'm a big fan of silhouette shots and these are no exception, I love the long shadow of the couple into the water and I like the colours being produced. If I were there with an opportunity to capture these images, I'd like it if I had thought to extend the exposure time to lose some of the detail and ripple in the water.