I would guess oral/verbal and written are the same and mean as opposed to suspected or suspicion.

This also does not mean that extreme emotional disturbance via adultry can't mean a reduced charge or verdict but that proof or suspicion of infidelity in and of itself can't prove extreme emotional disturbance.

Sort of like taking psyche meds is not proof of legal insanity in and of itself but that does mean insanity can't be proven.