I met a girl who seemed very cool. She was really smart, into computers (she's a programmer), funny, etc. etc. Basically everything that I look for in a good friend.
SO I invited her out to grab some beer one night.
Now, the thing is...I'm a bit of a beer snob. I invited her to go to my favorite beer drinking place...a place which features nearly 500 varieties of imported and microbrewed beer...all really great stuff.
Well, when we got there, I ordered a beer that is ~$20 a bottle (it is a very very limited run that new belgium did, and is quite good).
Her, not being a beer nerd at all, found a beer she liked, and ordered 3-4 of them...(it was a lambic from Belgium).
Now, because I'm a nice guy, near the end of the evening, I got up and talked to one of the bartenders and paid the check... The reason I did this was mostly because this girl was not a beer snob in any way, and probably had no clue how expensive what she was drinking was.
This girl decided that this gesture was me in some way trying to hit on her, and now refuses to talk to me. :(.
Some people get really weirded out when you try and do nice things for them, so be careful. Some people even go so far as thinking that you're offering to buy them lunch because you think they can't afford it.
Tread lightly, that's all I'm saying...