Sometimes I wonder about the nature of love and what causes it. What can cause something so powerful and invasive to occur? It can't just be lust or chemicals can it? For example, I am love with a girl that is quite pretty, but not the most pretty girl I have ever seen. I can't seem to get her out of my head most days, but this post isn't about that. It's more along the lines of what can cause such a thing? I have never experienced anything so strong or pervading in my short life, and truely I don't know whether I like it or not. Certainly I like it when I am with this girl, but away it seems like love is perhaps the worst curse humanity has. I am atheist so I don't really believe in godly intervention or anything like that, but I can't help but wonder what could cause such a feeling inside a person?