Like what tatyana said, if you love her qualities but just dont feel 'love' then its more of a close friendship and there's nothing wrong with that. You are obviously doubting things or you would'nt be writing about them here. Can you see a future with this girl, does she fulfill your emotional, physical needs. Does she make your heart flutter? Its easy to blame yourself and your psychological disorder but that doesn't mean you are mixed in your genuine attraction to this girl.