From what I've read here, and on your other threads, it doesn't sound like he's really ready to be in a relationship right now. Honestly, it doesn't sound like you are either.
In a good "normal", long term, significant other, type relationship, it helps if both parties are pretty stable and able to take care of themselves. You can't FIX him and he can't FIX you. You can help each other, but you can't fix each other.
If he has PTSD, HE needs to accept that it's part of his life. You can't make him do that. You might be able to convince him that you love and accept him as is, and support efforts to grow and improve, but you can't MAKE him do anything. Same with medication. (And some of us get by pretty much ok without medication and prefer not to use it.)
You also can't MAKE him accept your past. He either will or he won't. Doesn't mean your past is all that bad. Doesn't mean he's making a good choice. It just means that it's HIS choice. You're right, you can't change your past. And what kind of relationship is based on the need to lie? You deserve to be in a relationship where YOU are accepted "as is" too. With encouragement and support to grow and learn as a human being.
He can't actually MAKE you put up with not being respected either. That's YOUR choice. Not always an easy, uncomplicated choice to make, but you are the one who gets to (or has to) decide if a situation is working for you and what to do about it. Honestly, to me, you sound really desperate to make this work. That's bad for you, because it makes you want to give up too much of yourself to try to meet his needs and wants, as you perceive them. It's also kind of extra stressful for him, if he's paying any attention. It's way less stressful to be in a relationship with someone that you believe can take care of themselves. Yes, having someone need you is cool. It makes you feel "needed" and it might help you justify your existence, if you feel you need to do that, It's also a lot of responsibility.