Sarah makes the decision for you

Sarah lets go of Miranda and stands up. Bending over the arm of the couch, she reaches down and grabs the waistband of her yoga pants. She pushes them down, revealing that she was going commando. You get an excellent view of her pussy for brief moment. That moment ends when Tom steps up and shoves his cock inside of her.

Sarah's moans fill the air as Tom fucks her roughly from behind. You can't take your eyes off of the carnal display. Tom takes hold of Sarah's hips and pulls her against him as he thrusts. Sarah is clearly enjoying herself, encouraging Tom to fuck her even harder.

Your focus on the fucking is broken when you hear a moan come from elsewhere in the room. Looking around you quickly find the source of the moan.