You keep observing

Jumping in the action is the most natural think to do but you have luxury of having sex whenever you want and this allows you to tease yourself with your show.

"Lea. I want to spread your lovely legs and plays with your cunt using long fingers of yours" You give an order well aware that part of her is eager to do that

"I won't do it" Lea spits out

"You will or I will send a bullet right between your eyes" You say pointing the pistol right at her head. Adam is too busy with getting pleasure to pay attention to the conversation while Gwen is to scared to say anything

"And deny yourself future pleasure with me? Sure. Fuck off. "Lea looks at you with a triumph being sure that she got you

"Lea. There are little use of disobedient, rebellious cunt" You say coldly. "I have Gwen. I have his sister. It is easier to get rid of you. Now spread your legs and show that you can be useful enough or Gwen will lose you!" You aren't entirely sure if you are bluffing or not. Direct disobedience annoys you in a strange way. You feel like it is a natural flow of things. You obey, others follow.

"Someday..." Lea hiss angrily before spreading her legs wide. She proceeds with putting her left hand on her pussy and her fingers quickly find the clitoris... It is not a mock show. She plays with herself for real as if your order was the only excuse Lea needed to get herself loose.

"I want you to moan " You give her yet another excuse and she obeys immediately giving you an example of her low erotic voice. Her moans are not even close to fake ones. Neither she fakes erratic breathing or bright red cheeks or sweat all over her body or vaginal juices pouring around her fingers.
"Fuuuuuuuck!" Adam suddenly screams as he unloads his sperm inside woman's body for the first time in his life. He almost faints and lays here with his eyes half-closed. Gwen is still sitting on the boy unsure what should she do next.

"Gwen" You see an opportunity for even a greater show "Get out of him, go on your fours and lick Lea's cunt. She needs little help to come"

Gwen turns her pretty face in your direction and looks at you at disbelief. "Just do as he says! Please" Lea moans and you are quite sure that her motivation is not avoiding your anger being unleashed on her friend.

Seconds later Gwen is in a prone position with her head buried deep in Lea's crotch. Standing right behind you can't see clearly what she does with her tongue instead you have marvelous soft orbs of her ass just before your eyes.