Your concerns are understandable. This is a huge diagnosis and I'd imagine the deterioration would have been really bad. I'm sorry to hear he's in hospital.

What you need to remember is, he'd unlikely be released from hospital in a psychotic state. He'd be released when he's stable.

It's important that he maintains contact with his psychiatrist, and sticks to regular appointments. On top of it, he will need to be religious about the meds (if they prescribe any).

Yes, I think it is possible for you to have a relationship.

Yes, it will be challenging.

But.

With a positive mindset you can push through this.

Educate yourself on his disorder. That way you can pick up early warning signs of when he begins to relapse.