See All the Mysteries of Time, Just to See You Again

I lost my sight in a car accident and had no idea what my girlfriend looked like. That year, she suffered from kidney failure and donated her cornea to me before she left. The first thing I did when I regained my sight was to look for her. However, I only found a letter she left for me. There was a blank photo in the letter, and there was a sentence written on the photo: "Stop thinking about what I look like. The next person you fall in love with will look like me."