If it is wet and juicy and INCREDIBLY willing, and husband is feeling "cucky", then a Bull will appear and show her the ropes.
Looks can initially attract a Bull, but "willing" is what keeps the Bull plunging his cock inside time and time again into the "hidden garden" between her thighs.
Cuck must not change his mind, because when a wife is persuaded to set aside her wedding vows for extra-marital sex, she can't be blamed if her body becomes quickly addicted to having long-term extra attention from males that blow her mind. When a wife gets a taste, she "can't go back" to a vanilla marriage - one cock won't do the job any more.