Love stories have been a part of movie history since the first motion pictures, and while it is always nice to see the loving couple live happily ever after, sometimes romance movies with sad endings can be even more effective. There is some corelation between love and tragedy that works well on audiences as a movie can see a romance end in such a sad way while still reminding the viewers of the love that goes on.

https://screenrant.com/best-romantic-movies-tragic-endings/