My 23M bf has a close female friend (Girl A) that is like a confidant of his. They would meet up a few times a year to chitchat about life and occasionally text one another.
Previously i asked what they were chatting about during their meetups as it often takes 3-4 hrs for each meeting. He mentioned they were just gossiping about their ex classmates and some boring life talks which is normal and understandable on why they had never invited me to join for dinner.
Last week, i made a new friend which happens to be Girl A’s good friend and my bf’s acquaintance. She mentioned that Girl A had occasionally shared their conversation topics from those meet up sessions with her and its usually comprises of one of them asking advice for their relationship, and also frequently involve discussions of a more explicit nature e.g how to self pleasure and how to get better in bed etc.
After hearing it, i just dont feel comfortable knowing that such personal stuff about our relationship and intimacy are made known to someone outside our relationship. Furthermore knowing that he may be twisting the facts about the conversations they had during their catchups. As my bf and Girl A has been friends for a decade, he probably had been discussing all these issues with her prior to getting attached with me and I want to respect that privacy of his.
But how can i go about asking him respectfully refrain from discussing such intimate and personal issues with Girl A in the future?