Mean in the “went no contact (and mean when we do have to have contact for one reason or another) overnight, for seamingly no reason and don’t want to tell me or anyone else what’s wrong” way. Actually they promised me that they were going to tell me what their issue was, but they never did. It is the second time something (exactly) like this happened with this person and the first time they made the same promise, and did only tell me after an important event that can not be reproduced this time.