This is the part that keeps you there PinkPoet, this is the part that makes you want to believe this is the real relationship you have and it’s just that there are some blips along the way. The truth is these moments are the ‘blips’. I don’t believe in monsters, or a person being good/evil, but it comes down to actions and behaviours where such distinctions make little difference.
It may not be conscious for him, as in he may not equate it to self-interest, but I think it is - you get this caring side when he’s pushed it too far and he needs to be like this to stop you pulling away. It works for him as much as the other 90% of your relationship.
OK so you’ve verbally told him what you need (many times), he’s now seen you having PTSD nightmares (I think not for the first time though?) so what changes will we now see? I think none. He could quite easily be snapping at you that you need to get over it in 2 days from now, and will be groping at you even sooner.