Forbidden .... is it human nature?

Is it human nature to want something that you can't have. To crave for something forbidden.....is it me or is everyone the same, I wonder ....

Wanting something that I can't have been happening far to many times already and it's kinda scary cause deep down its something that i hope will come true....

Lately, for the past few months I have this major crush on this one guy that  I know I can't have. The feeling just happened  sometime back in late August and somehow I can't stop thinking about him... It's getting so much worst this past few days and its driving me nuts! The fact that we have so much in common makes me just crazy. Every time he accidentally touches me, its gives me goosebumps.

I'm constantly thinking if there even a possibility and lately he has been my motivation to change. I get goosebumps when I'm with him and my heart just beat faster. The little little things that he does (and I'm sure he doesn't realize it) makes me happy...

Why is it i'm falling for someone who i know i cant have?