My stepsister watches like me and my boyfriend have sex and masturbates

My boyfriend sometimes plays a computer. But I want sex. I took everything into my own hands and we began to fuck, but we took into account the fact that the door to the room was open. And we are not alone at home. The day before, my half -sister came to visit. She saw all this and she really liked it. She masturbated and watched my boyfriend fucks me