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I really don't understand why you spend so much time communicating with him with messages, when there is report and ignore options available.
Last I checked, he was off DT. He was removed at the beginning of June. If you want to ~ him that's fine, but do you really need to pour more salt into the wound?
I am not sure who poured salt into wound in this case, but 1miau is not the first member who noticed weird behavior from him.
Maybe it would be better for one of them to be smarter and stop PM conversation early before things escalated more, but it's to late now.