Well, about one that really upsets my GF (and also me afterwards) is that she expects instant answers from me.  Like she woud ask me "what would you like to do tomorrow?", and while I am thinking about different possible answers, she gets upset and starts telling me "If you do not wish to do anything with me just say so", then I get upset and we move into an argument.  I have tried to explain to her many times that I do not have "INSTANT" answers forevery questions she may ask me, but she still expects to get one.
So, now I have come up with an stereotype answer when asked a question that requires my thinking before replying, and that seems to avoid confrontations.  I will say " I do not know, sweetie (she loves that word), let me think a little and I am sure I cn come up with a good thing to do".

There was another one that upset her, but she got me out of it by now.  I normally will shower when I wake up in the morning.  She insisted on taking shower before going to bed, and take a wild guess who won that argument.........

People who fiddle with chopsticks because if you can use a pencil you should be able to use a chopstick. Burping in public places and not flushing the toilet seat because you want to leave the next guy a surprise and tell him to never say you've never gave him anything before in his life!

When I refuse to spit bones on the table and instead, I take the bone out with my fingers and place it on a tissue. The showering issue happned to me too when we spent a few days at my mother-in-laws home. I have never felt so freakin dirty. Hard for me to get dressed in the morning without having a shower. I have seen shower stalls, nice ones, used as storage areas for boxes and bags of who knows what.

Eating with your fingers. They dont like that at all. 

I always get funny looks when I blow my nose with a tissue.

Apparently, showing your tongue in any way, such as when eating ice cream or nya nyaing.

Also, French kissing in public. Chinese folks don't like tongues I guess.

Using logic. 

drinking pina coladas getting caught in the rain

tanning

Honesty.. and our ability to solve problems using common sense.

Dating the local girls!

not being gentle and generous to ladies
and when u want sex,you say"i never pay for sex" this sound absolutely strange whilist he just paid two girls for dinner and traveling tickets etc.
i can't really see your westen cultural of being gentleman,tenderness,romantics,caring,i thought i just get disappointed by that!

Oral sex.  When she says what are you doing.....no no no no....and I say trust me you will like this.

What do the Chinese find repellant?  Using the heater in the dead of winter!  My wife always complains that it costs too much money.  Leaving the water cooler/heater plugged in!  My wife always complains that it costs too much money  Forgetting to turn off every single power strip before going to bed!  My wife complains that it costs too much money. Using too much dish soap to clean the dishes!  My wife complains that it costs too much money.  Taking a taxi to work if I'm running late!  My wife complains that it costs too much money.  Refusing to wash clothes by hand because we own a washing machine!  Because, my freakin wife would rather our money rot away in the bank earning 0% interest and 6% inflation, than to live comfortably. 

Waiting until you're a responsible adult  with a steady job who can think a relationship clearly before getting married.