rafik,
I have not had the comment, but I have had 1000's of poor remarks, designed to erode my confidence. After a while, no matter how strong you are mentally, its an accumulation of blows. It will reduce you?
Why should you withstand it? When you could be with someone who treats you a hell of a lot better? Respects you? Likes you?
Flip the shoe on the other foot. Put your ass in her face, all the time, in front of her friends. Gang friends up on her, see how she likes it and how she looks in a couple of months. Tell her she can't suck or even fuck right, wait she doesn't fuck she just lay there.
I personally believe its best for men to understand what their dealing with, and for them to decide how they expect to be treated, and vice-versa.