As someone who's done and said a thousand uncharacteristic things I've profoundly and incessantly regretted ever since, this guy is deeply physically ill and it sounds like his mom puts a real spin on him, so don't take the nasty things he's saying at face value, at least until he gets better. He's been under a lot of stress and maybe his cruel statements shouldn't be taken very seriously, until he's better. I'm on your side, but if you and he are good together under normal circumstances and things went sideways over this illness, it's the illness.