How to love a broken man?

I never wanted to be with a broken man. At the first sign of trouble I’d usually dash away. Childhood trauma? Past relationship was insane? I’m out! But I fell in love with a broken man. He held it together for a long while but in this relationship I’m learning him more and more and he’s cracking. I’m seeing it all. The hurt and trauma from his whole entire life is seeping out and it’s causing tremendous road blocks and issues for us in the current relationship. He didn’t even know how to accept love being that he didn’t witness it growing up and was shown love by being beaten. He has serious trust issues and that has hurt our relationship too. He’s been messed over by his family (I’ve witnessed), a couple friends, and one ex which was a huge deal. It’s gotten so bad in our relationship it’s like he’s malfunctioning. When his health insurance kicks in next year (around February) he plans to seek counseling. But at this point he’s brought me a lot of hurt that I don’t deserve. I know that he’s hurting too but I’m exhausted and have tried to help but it’s not working. Now idk what to do 🤷🏾‍♀️. I love him but in this state it’s like loving him isn’t healthy. My fiancé and I have been together almost 4 years and have been knowing each other and friends, at one point high school sweethearts for 10 years