BirdInFlight wrote:
If the last normal interaction you had with him contained nothing that might have upset him, could it be that in the interim a third party has said something to make him turn against you, even if it's false? Or a mutual friend relayed something that he took the wrong way?
If there are mutual friends, ask them what they know or what they think about this.
I think this is worth looking into as well. If he is refusing to talk or write back, could a mutual friend go and ask him what the problem is? It could be a big misunderstanding, or someone lying about you, or you could have unintentionally upset him. Or it could be something upsetting him that has nothing to do with you, but he's not been ready to talk about it. It could be cleared up pretty quickly with an explanation or a simple apology.
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Diagnosed Bipolar II in 2012, Autism spectrum disorder (moderate) & ADHD in 2015.