Wonder why that is.
Anyway, it also could be the *type* of girls he's picking up. Those girls may not be picky. Or he may have low standards himself. OR despite his schizophrenia, he's probably quite intelligent (schizophrenics often are) and if he's confident...well.
I have a hard time picturing him being a severe schizophrenic, though. I've known severe schizophrenics and they're pretty obvious.