Not a Fairy Tale

So here's a thought, why is it so easy to fall for someone not even fall just have an interest in someone? Those times when silly little girls just think that fairy tales actully come true. Really what's up with that? I mean happiness brings it all together but why? Some connections take time to really grow and some just actually clicks the second they say hi. What if it happens to you more than once? How can you tell if it's just friends or even more than that? Nothing ever makes sense to me anymore.