Never say: wau, she is fat in front of your friends.
I was with my friend in pub and she asked me what i think about the waiter, and i answered: ou i dont like her, she is fat for me. What was after? My friend said: if she is fat for you, what am i? I am double size than her..
You know. In that time it was impossible to repair it and next week or two weeks she was angry with me just for this.
Never say it! You dont know girls.