Sex in a Muslim family or like two Muslims shared a member of one guy

Everyone knows that the attitude to sex and relations in a Muslim family is completely different from the generally accepted in the modern world. It often happens that a couple of a Muslim woman is chosen by a father or family. I’m not talking about the fact that Muslims can do sex only after the wedding and virginity should also store it before marriage, so as not to disgrace themselves and their family. But our heroine met the guy in whom she fell in love and decided to bring him to her visit. Her younger sister saw her with the guy and was worried. The girl began to convince her sister that it was wrong to meet a guy so easy and that her father would not like it at all. And in order to prove to a naive sister that the guys are being conducted for sex first showed him their boobs as a bait, and then even climbed under the table and began to suck a guy’s member. This brought the guy a guy in a rage, but she realized her sister's hint. The two Muslims had to divide a member of one guy, as the younger sister also liked it.