I Need to Know That You Trust Me

If he thinks there's nothing wrong with him, then it's not fixable. If someone is unwilling to reflect on their own behaviour and see what they're doing to harm the people they supposedly love, that doesn't give them a right to hurt you. And if both people want to work on the relationship and heal through it, there are going to be steps to that. It's important that you both understand what those steps are and you give each other the space to take those steps.