I'm a 39 year old male who's developed a crush on my sister in laws 16 year old niece. i first use to see her around when she was 11 when she'd come to parties my brother and his wife would throw and she'd of course arrive with her parents. i never payed much mind to her then cause normally i don't got much business socializing with kids as so. through the years she's gotten older and has matured as much as a 16 year old girl does and i've began to notice how attractive she's gotten. well as of a year ago i was employed by her parents to babysit a second child of there's, her 5 year old younger sister; not only that but i was then asked that she'd be keeping me company as well. her and i would have long good conversations and she was a blast to get along with and joke around with but i've always tried to see her as a kid and also somewhat of a niece by law. i've never flirted with her and when we do talk i'm always cautious with things i talk about to her. i do get turned on by her though but keeping that in my mind is as far as that will go. anyway we sometimes might chat on face book and every time i come to a family party that she will too attend it is her and i who end up spending the most time with each other there. i've always been fond of her in an innocent way but recently i've been thinking about her alot and feel this desperate need to want to see her again just to be around her. i feel jealous sometimes when she talks about other boys she might like in school or other guys who might like her. i try not to look at her pics on facebook but sometimes i can't help it cause i desire seeing her. i'm damning myself cause i'm not someone who's into young girls normally. i don't want to feel this way about her cause it's so inappropriate. it's a crush i have that hurts me and i'd like to get past it and find a distraction, better yet to fall for a woman close to my age. what i'm asking is am i considered odd to be feeling this way for this girl?

It is fine for you both to get along in a friendly way but you seem to like her in a 'different' way.
Stop looking at what she's up to on Facebook and leave her to grow up naturally.
It may be painful for you now, but in the long run you will be glad that you didn't let her dominate your thoughts.
She has her own life to live, and so do you!
Best wishes.
But do not think for one moment she would respond to you as an equal. She doesn't have the maturity! C'mon! get your head out of the hormonal bucket (not to mention the relative bucket). You are old enough to be her father and if she was your daughter would you want a 39 year old man hulking around her with sexual desire?
Do not "babysit". This is a jailbait warning.
There are plenty of woman your age that are beautiful, funny, full of life, and have the ability to understand you. A woman that you could really talk with, not just a
nothing- to -lose pretty girl who is simple and thus easy to laugh with.
As in, she'll AVOID you in any means possible and would NEVER want to be around you ever again. She'll find it gross and disturbing.
I'm not trying to be mean, I'm just being completely honest.
Try to get closer to her in any way more than family and you'll lose her permanently.
You're just craving for an attractive woman that would spend time with you.