Is this strange for a therapist to suggest?

Husband and I have been together for 16 years, his therapist of 8 years, according to him, suggested that "It might be necessary that if he's been doing something that makes you uncomfortable or hurts you in the bedroom for 10 years. It might be necessary for you to do something that makes him uncomfortable and hurts him in the bedroom for 10 years."

I wasn't there, so I know I'm lacking context, which also little background, I don't do anything crazy, to hurt or make uncomfortable that I know of, other than. Typical "You're on my hair!" Or "You didn't cut your nails!" Things that come from being thoughtless, so the heck?

Therapists shouldn't suggest stuff like that right? Feels fishy. Would a therapist suggest reciprocal justification behavior in a patient as a method for healing?