It's not really "old" unless you consider 1968/9 old. Anyway, as we head into April, a great movie to watch for those of the "romantic" and "comedic" ilk, I strongly recommend "The April Fools" Great movie.
If you view the movie, despite your age, a theme or two is in this movie, and one can walk away from it with new and different perspectives of relationships.@Pianist1234