Introducing your GIRLFRIEND as your SISTER, SERIOUSLY?

I don't know how to put this one down without stepping on unhealed wounds of some of the people in my inner circle, but for all its worth, here goes.
See my friend and her boyfriend (ex-boyfriend right now) were out and about one afternoon taking a walk together just like you people in relationships do. They were all over each other P.D.A (public display of affection) and all that, until they meet the boyfriends friends. Being the good gal she is my gal steps aside to give her guy room with his friends, walks aside with a smile. "hey who is that?" she hears the guys asking about her.

"Thats my siz."

The guys look a her with all the hyena eyes they could master and my gal looks away as if she has not heard a word.Playing dumb, its called.
Okay i have no problem with the girl.This guy is my issue here, was he too ashamed to say that she is his girlfriend? Or was he just being appreciating?

For the sake of Safeminist's readership i will not generalize this, i will stick to this one man.Introducing your girlfriend as your sister eithr leaves her the option of concluding that she is a single woman or that your friends know another gorlfriend you have. I know guys will say that maybe he was 'protecting' her from his friends who would have taken advantage and tried to lure her, but fellas that is not an excuse and yes i know u might think my gal is to blame but seriously how far are you going to push it for a relationship?

Have a fulfilling Wednesday, now would you?