Tanya is in a committed relationship with brian. however, when she indulges in sexual intercourse with brian, her thoughts often wander and she tends to think about her attractive colleague and the minimal bodily contact made with him. what would a qualified therapist make of tanya's behavior?

A qualified therapist would think that Tanya's behavior was normal. It is all too common for deeper connections to be formed with co-workers and colleagues, as you are sharing passions such as accomplishments with them, and you are working closely with them on a daily basis. Managing these feelings in a healthy way is something to be focused on regarding this issue.