How do I make my boyfriend realize he was abused?

It is taking a toll on our relationship rn. His ex has abused him in many ways and he has obvious trauma from it.

However, he has a hard time recognizing that what was done to him was wrong. He has a hard time realizing that his ex never loved or valued him and mistreated him. He makes so many excuses and blames himself for things that he was not responsible for.

He's so manipulated and broken. I don't know where to go to nor what to do. I appreciate any help. I tried looking and haven't found anyone
How do I make my boyfriend realize he was abused?
Post Opinion