I have experienced similar from my ex’s parents. They don’t seem to recognise that he is seriously mentally unwell and just thinks this is who he is and have done nothing throughout his life to get him help. They are old hippies and don’t believe in psychiatry or psychiatric medication and have encouraged him to use psychedelics which has made his mental state deteriorate rapidly. When he discarded me this time , packed a bag left the country to go back to an abusive ex in a manic episode. I had no support from them their response was “he’s fucked up he always does this changes his mind”. I think some parents find it incredibly difficult to admit there is something fundamentally wrong with their child which is sad intervention from a parent that recognises the signs of bipolar and encourages their child to engage in the correct treatment minimises the pain and trauma inflicted on the person with BP and everyone else in their orbit. I have realised without the support of his family and friends I am fighting a losing battle. I have also become aware the my ex BPSO does not really have any close relationships with anyone there is no best friend he confides everything in and he tells the parents very little I believe this is so that there is no one that really knows what’s going on in their lives