Have you ever seen the movie, "The Notebook?" Because this totally reminds me of it - the simplicity and the complexity and overall the absolute commitment of feelings. So poignant and tender - simply wonderful!
The peaceful expresion on their faces in the last scene, the "my feet and his eyes" from the second, and how Severus still stands so tall and dignified in the first image - Gah! You made me all weepy and smiley.