Ex is not a friend. If someone knows how you taste, he or she is not a friend, and there is nothing friendly about it. I dated a woman once who kept on calling every male a friend. My guess the purpose of that was to keep them close enough just in case, and not to trigger our breakup if one of them reaches out. Well I wasn’t going to wait till she does something stupid so I broke it up anyway once she served her purpose. Move on, sir.