Morning River21
How your partner has treated you mirrors very much how my ex behaved towards me. It came as a bolt out of the blue and the coldness and blame was focussed on me. It’s a cruel way to behave especially when they cut you out, and you’ve been nothing but kind, loving and non judgemental. It won’t make it easier but there are others that have and are going through similar too, so knowing you are not alone may help you in some way.
It sounds as if he’s in a period of confusion so is lashing out to the closet person in his life, which is a sad affect of addiction. Cocaine is a sneaky drug and I would suspect it’s the effects of cocaine that are talking not the real person you know and love. You’ve done the right thing moving out and don’t pressure yourself to come up with answers or solutions. Accept how you feel, speak to someone you trust and take care of you.