Mental attitude is all important, the bull is normally expected to take charge of proceedings. Yes but with important differences, whereas normally the guest male might take an equal or subordinate role to the husband, in a cuckold setting the husband takes the subordinate role to the extent that he might have no involvement and certainly none unless invited.As much of a part as you decide to let it play but it is implicit that the cuckold is not providing the sex that his wife requires.Others view the cuckold as enlightened for unselfishly allowing her to experience pleasure from a superior performer.
A common reaction from a wife is that her husband has lost interest in her and is offering her the freedom to look outside the marriage in return for receiving the same privilege.
Hotwives are allowed by their husbands to meet other men on dates etc and have intercourse.
The wife's lover, chosen to take over her husband's sexual role in their marriage.
Some cuckolds are made to wear chastity devices such as a plastic or metal cage around his penis to prevent any sexual use.
The non-participation of the cuckold husband is considered an essential element by some, even to the extent he may not be in the same room.