When I was looking for a great romance film to watch, I was contemplating between this and When Harry Met Sally... I looked at the latter first. By the end of both, I was more satisfied with myself for picking these choices. Both have you guessing if soul mates are possible, and they do this by comparing the main couple with other people. The latter uses it to show the main couple over time, while Sleepless In Seattle uses it to convey the idea that even distance can't keep them apart.