You see.... how shall i put this.... I think I'm in love with my sister... I know it sounds weird but... I don't really know for sure, I just feel strange when she's around and I can't even look at her straight... My friends say that I act different when she's around... um... is this normal? I'm a year older than she is, she's 15. I can't stop thinking about her... I don't really know what to do...