As the title says. My big sister (two years older) always orbiting around my circles of friends,always when we are young , swallowing the pill, I realized that it was not his great ability to sympathize but his great skill in hypergamy which was the cause. All truth said, she doesn't have much to offer, as much physically as mentally or socially, and by using our links she has access to men whom she could never have approached without any other reason than "I am the big sis of A". Except that it negatively affects my relationships. And there she tries to put it back with a professional relationship that has become a friend. How to stop her without blacklisting me from my family?