I'm curious about X.What on earth would make him/her do such a thing after the 10+ years you have been friends? And if indeed you know the nature of their "skeletons in the closet", why would they take the risk of alienating you in such a way? None of it makes any sense....unless X did not realise the potential harm in what they were saying.....or doesn't care, either for your confidentiality or theirs.Sorry either way, crap situation to be in.