Hi Kaydan,

It's hard not knowing what mood your SO will be in and it's draining I can relate.
A pwBPD have a high level of rejection sensitivity, don't value themselves, don't trust themselves or others. He never apologises and blames you for everything because it's a defense mechanism called projection that works unconsciously. Projection rejects what is emotionally unacceptable. A pwBPD feel a lot of embarrassment, guilt and shame and often project those negative feelings, actions and attribute these feelings and actions on others. It's frustrating when you're blamed for everything and you can't get your SO to empathize and see your side.
I'm sorry he's refusing help. What sort of help was suggested and how?