In the name of holy association, a sexually frustrated male will try to establish a relationship with isolated sisters. sharing lotion has the connotation of setting up house, sharing the close touch, while the hapless husband is out of bounds.
A married woman might forgive her husband a dalliance (HRC) but not a deep relationship, the kind the amorous "brother" is trying to develop. Men differ.
An interesting ploy of these eager adonises is to to get a place that gives them 2 hrs of unrestricted view of the sister of their choosing, , married or not, prompting the discerning family to make the needed moves during song / prayer.