You have to distance yourself a little and realize that he doesn't know the difference between reality and not reality right now.
while his argument logically makes sense, there is something in you that tells you it doesn't, right? Some people with schizophrenia try to rationalize their experiences so gain credit or feel like a normal person. That's what I would do. And he doesn't realize that what he's experiencing isn't real- that's what schizophrenia is. He won't understand this, and there's no way you can make him understand it, until he is treated successfully.
If you plan on staying with him, you are going to need to develop a relationship with his prescribing doctor. Right now, his medications aren't working, or something isn't working. While he may be perfectly functional, if he still believes his delusional thoughts are real, that is wrong.
it's really hard with someone we love because we want to believe them, we want to validate them. But that won't help him.
Schizophrenia usually gets worse if someone is not treated. It is a lifelong illness for most people and most people with it need to stay on medication until the day they die. It usually shows up around early adulthood and develops from there, so it's possible that you don't know the extent of his disease. I'm not trying to scare you, but you need to know that it's not just going to go away. He deserves to have a loving relationship, and it's perfectly reasonable to think that he could be fine on medication. So it's up to you to decide if it's worth it.
Whatever you do, don't let your love for him blind you to his delusions. I've been there- I know it's hard.
