Yes

Before Morgan could start walking away. Max told her to stop and enter the room locking the door behind her.

She could not resist and entered the room.

Max could see fear in his sisters eyes as she locked the door.

Cindy was still on her back with her legs spread and her cream filled pussy was very exposed.

Max looked at his sister and said "Morgan clean Cindy's pussy with your tongue now."

Morgan knelt between started licking her legs and started licking her pussy.

Max knelt down next to Morgan's ear and said "You like the taste." That was not a question it was an order "You realy like the taste my cum mixed with pussy juices are the best thing you have ever tasted. You can not get enough but it has to be my cum. No body elses tastes as good to you."

Max watched Cindy orgasm several times as his sister eats her out.

Once they were finished he got Cindy to dress and go back to jogging and to forget she even visited his home or rode in his car.

Max was left alone in his room with Morgan her face covered in Cindy's pussy juices and his cum.