Looking for a "romantic" movie or tv movie from 80's to early 90's about a young photographer [closed]

My sister's birthday is coming up, and a few weeks ago she and I ended up talking about a film we had seen over 20 years ago. Neither she nor I could remember the name of the film, or the actors.

The only thing we remembered was that it was a film about a boy (I think he might have been a teenager) who was photographing stuff, and he was at this pier or harbor and took some pictures. When he finally got home and developed the pictures he had taken, he noticed a girl in one of the pictures, whom he had not noticed while taking the photo.

I think he then responds holy shit, because he thought she was drop dead gorgeous or something, and he tries to find her, which he eventually does, but I think she was already in a relationship or something and that this movie does not have a happy ending.

This is about everything any of us could remember, but my sister sounded like she really wanted to see this film again, so if I could find out what film this was, I could buy it for her birthday.

The movie was in English.

Does anyone have any clue what film this is?