My boyfriend was talking about me to his best friend

My boyfriend is at work at the moment but accident left his phone home and he had gotten a text from his best friend and I saw they were talking about me. My boyfriend has been going through a lot, now having the person who caused him so much trauma now working at his job. I did tell my boyfriend that I know he's been at the job for a long time, but the job isn't worth it because being around this person is fucking him up mentally. He started wetting the bed. One night I woke him up from a nightmare and he had a panic attack and started vomiting. He also doesn't remember 90% of his childhood but he's having nightmares and flash backs and getting some memories back so that's freaking him out. It's all just been really bad. Anyway I saw him and his best friend were talking about me and kind of the situation and it made me really sad. My boyfriend was pretty much saying he feels he's ruining my life because he's weak. That he wants to give me the world and be a man that I can he proud to marry but instead he's pissing on me at night and having mental break downs. His best friend was telling him that I love him and I wouldn't have stayed through all this if I didn't. He said "I know she loves me. She has to be strong because I'm so fucking weak". Just how badly he put himself down in this texts made me really sad. I didn't know he felt that way at all. I know he's going through a lot with his trauma but I didn't know he felt he was ruining my life. I already told him plenty of times I wasn't upset with him for wetting the bed. Maybe me suggesting him using diapers made him feel that way? Idk. It just makes me sad the he would say such terrible things about himself and thinks I'm too good for him and can do better. I also don't think he's weak. If anything he is probably the strongest person I know to be able to go to work and see a person who hurt him in the worst way every day. He should be home in an hour. Idk if telling him I read those texts would be a good idea, but I want him to know I don't see him how he sees himself and he's not ruining my life.

Edit: He is in therapy. He's been in it for a while, especially because of blank memories in his childhood. I just think this new situation and getting these memories back is really fucking him up ...