I hate to say it but your boyfriend is a tactless, rude and inconsiderate individual. Why on God's green earth does he have to mention this woman at all???? He should be aware, especially at this age, it is not acceptable, nor appropriate, to talk about this woman to you. Once was enough. Have you told him that that is such an insensitive thing to do? If he's so obtuse, mention it to him. He may be unaware of his ill-mannered tactics. That, in of itself, is pathetic. Why are you putting up with this bs? He is really messing with your mind.