My Husband Almost died

My husband got into a motorcycle accident months ago. He almost died and I remember the pain I went through seeing him there. He pulled through and I will forever thank the universe for his life. The recovery has been the hard part. The doctor said he will never be able to have kids. Being 22 and knowing we can't have children had been really hard to except. He has also lost a lot of control over his bladder. I've been trying to support him, but he seems... Dead... On the inside... If he is having trouble walking and I try to help he will push me to the side and try to do it himself. I'll try to help him to the bathroom and he will tell me very agitated "I got it!" But end up having an accident on the floor and will get upset if I try to help him clean it up. He had ended up having an accident on the couch and he didn't even notice. He got upset when I told him and told him we can try some adult protection, but he said he is 22 and doesn't need diaper. He continues to refuse my help. Last night he peed the bed and I woke him up to change the sheets and he started crying... And I will never forget what he said to me. He told me "Why didn't you just let me die". Hearing my husband say he wanted to die broke me. I told him it was because I love him and he said "I can barely walk, I pissed myself, and I can't give you a child! I'm useless to you. if I died you could have found someone to be the man you deserve". I told him to NEVER say that again.". I held him tight and tried to tell him everything will be okay. I feel so heart broken he is hurting. I thought about getting him therapy, but he is too embarrassed to go to therapy. I want him to be happy and I'm lucky he's even alive♥️