It is not unusual for a person to need to discuss his/her relationship with someone outside the relationship. In fact it is healthy, necessary. But broadcasting intimate details, such as you describe, is beyond the pale. I have one very close friend for that kind of disclosure and no one else and even then, I only use rather broad terminology; anything more detailed-such as "not getting enough" would indeed be highly disrespectful so you are right to be concerned and should confront him about your concerns.