Interactions between the sexes were highly regulated by Victorian society, even those between affianced couples. For example:
"No young lady who values her status in the eyes of society ever appears at theatres or other places of amusement alone with her [fiancé], she is either attended by her mother, sister, or some other female chaperon. Neither should she frequent promenades and other places of general resort, without the companionship of a sister or friend."
from Cassell's Household Guide (1880s).