Cleo Summers “Threesome Therapy: P1”

You and your girlfriend have been going to sex therapy recently, and you've discussed the idea of having a threesome. Your very attractive therapist advises you not to use a friend as it could be too close to home, so she graciously offers her professional services. She instructs you to start wanking while herself and your wifey masturbate with you... how fucking horny is this!?