Am I a bad person??

So me (23F) and my partner (25M) have been dating for 4.5 years. The first 3 years were great, and everything for the most apart is still great.

A year and a half ago he got seriously injured in a accident and needed surgery on his leg and lower part of his body, including his penis. He’s fully recovered now, and can walk and the doctors said he can have sex again. However, he says that he’s lost a lot of feeling due to nerve damage and that sometimes his erections are painful. So we haven’t been having sex. Which I understand.

That said, he had a follow up appointment a few months ago where they told that things are probably never going to change. Idk why but it kinda hit me that being with him means that I’d never be able to have sex again. He’s against the idea of an open relationship.

Also other things are starting to weigh on me. He’s really depressed (which makes sense giving the trauma and grieving of his sex life) but also refuses to get help. I know I can’t force him to seek help, nor do I want to, but it just breaks my heart to see him like this.

He also says things like ‘if it weren’t for me in his life, he would’ve k*lled himself” or “the only thing keeping him alive is the fact that I’m still with him/love him despite not being able to have sex”. And that bothers me because wtf do I do with that??

Idk if this is selfish but, I’m 23. We never discussed being long term but now I feel like I can’t leave or he’ll hurt himself. Also, I miss having a sex life. I just. Idk what to do