Yeah haha fair enough! Maybe it would have helped to see the girl and empty chair from the front instead of from behind? That way the viewer can see more of the girl and what she's doing (looking up wistfully into the sky behind her shoulder, putting a hand on the empty chair where she'd be holding someone's hand, stuff like that) and have a better chance to make the connection between the two. But those are just some random ideas that come to my mind.
Outside of any critiques about the theme or the story, you did a really good job with the small amount of space you had. The water and sand look really nice and everything looks cohesive