It's intriguing - do you find that even as an adult you still remember your old high school breakups? Why do those seem to be so powerful? Is it that hormones are at their highest level in high school so everything seems more powerful then?
That definitely could be it, that we are more jaded or cynical or worn down by life as we age, and the experiences we have are just another step along our path. We know that it won't be the end of the world.
Probably a good thing - it wouldn't be wise to have that "This is the one!!!" feeling about every random guy we met .