What did a girl means by, “How many girlfriends did you have”?

Girls are too sensitive by nature in that case, they doesn’t want any other girl in the life of their boyfriend, that’s why some of the boys often talk about other girls in front of their girlfriends to irritate them or make them jealous.Girls often ask such type of questions, to know that in how many girls, is my friend involved.Because by knowing such, the girls become know that, what her importance in his life is, and if he had too much girlfriends then there is the rare chance of any sincerity.Because let think that you are having a date with your friend and he is having cell phone text to others g/boy friends in front of you.