Oh, boy, do I remember the messed up, purposefully guilt tripping conversations with my A stepson. Nobody ever loved him, nobody helps him, etc.....!
None of what he said was true....and my hubby and I finally learned that there was nothing we could say that would make any difference. He was just going to believe what he wanted to in his dark and sick world. When we stopped trying to explain ourselves, it finally stopped. Yes, we had to go no contact for a bit, but it finally stopped.
I hope things will get better for you soon! HG