I remember this phase. My axf heard things in detox and adopted them as his own beliefs, his sense of self was so low it's like he didn't even know who he was.
What i got tired of was being around for him to "take," like another drug, you said he was grabbing you to make out and I can just remember my axf doing the same thing, it gave me the creeps. Then I'd feel guilty for rejecting him. It's a bad cycle and I'm glad I got out.
I am sorry you're going through this.