What's the best sad movie that'll definitely make me cry?

I'm a fifteen year old girl and, currently, I'm scrolling through
Netflix instant watch for a sad movie that'll make me cry. Romantic
movies are fine, whatever you want to suggest. I'm just in the mood
for one of those types of movies.

(Preferably no nudity or anything like that - I am only fifteen, after
all.)

It'd be great if you knew that it was on Netflix, too. So I could
watch it right now. xD

Anyway, thanks in advance for the help.