Open Question: how do i know if i am obsessed with my wifes sister, lusting for her, or in love with her?

[feedcrawler]

I met my wifes sister about 4 years ago. I have always thought she was pretty, I have always had a thing for college girls (16-18). She kind of meets the look of my ideal girl, petite and sexy, cute....anyways, it was never a big deal, but since I got married a year ago, I have started to think about her alot, too much you may say. Too add to things, I have a foot fetish, and I love her feet, she has the most gorgeous cutest feet and all i can think about it sucking them. She stayed over one night, and I was so tempted to set up a hidden camera in the room. I didnt do it thought. But i have regretted it since, as I find i masturbate frequently thinking about her, looking at her pictures on facebook. When i saw her recently, she was wearing those shoes which are like laced around her feet, so i could see her feet, and I was trying to take a picture, but there was too many people in the room. I have always had strong foot fetish urges, but why are these directed at my sister in law? if anyone ever found out, my life would be over. Why have my urges for her become stronger? why her out of all the pretty girls in the world? I am actually scared now as its been a year the feelings have got stronger

More...