Sz can be very damaging to a persons social functions and it requires a lot of patience and understanding to handle. Many people have trouble understanding the social behaviour of a schizophrenic.

My own long distance gf is currently in such a bad condition that she can just about manage an sms or mail every few days, whereas before we would send ten in one day.

And that is not because she does not want to. Its her schizophrenia that is responsible for it. So I think it is extremely important to know in some detail what kind of impact sz can have on your bf's behaviour.