I'm 22, she's 17... we're at different stages of our lives... is it appropriate to date & would it work?

I'm 22, in my final year of university, I have a responsible job and I live away from home with uni friends. I'm back at my parents' home for Christmas and I've been chatting to and hung out with a girl who lives nearby. She's really sweet and lovely and beautiful and I've found myself falling for her. I'm 99.9% sure that she's had a bit of a crush on me for about a year - we've been chatting on Facebook a little bit and I've given her advice sometimes. But, she's 17, got another year and a half left at college, and still lives with her parents.

So I want your opinions on if it would be appropriate for us to date or not? and do you think it would work or not with our lives being at such different stages?

Thanks in advance :)
Updates
+1 y
Thanks to those of you who have already answered. By the way, I've already pretty much made up my mind about what I'm going to do (I'll tell you in another update tomorrow when people have answered). If everyone says the opposite to what I thought then I might change my mind, but I'm mainly just interested in getting people's opinions on the matter and to get an insight into how she might be feeling about it all.

Thanks :)
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+1 y
Also, just to point out that in the UK (where I live) 18 is the minumum age to drink so she already goes out to bars, and 16 is the minimum legal age to have sex so there wouldn't be anything illegal if we did get together and ended up in a serious relationship.
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+1 y
Thanks everyone for answering. When I asked this question I had already decided that I'm not going to take things any further with her. She's lovely and I think we can get on really well, but I think friends would be best for 2 reasons:

1 - I don't really want to go out with someone who is still at school & lives with their parents. It's a massively different perspective on life from mine, plus I don't want to have to travel home all the time to see her.

2 - She is coming up to the years...
I'm 22, she's 17... we're at different stages of our lives... is it appropriate to date & would it work?
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