This would make me unhappy, but it would depend on if they know the person, if it's a celebrity, whatever. Fantasizes about others while being intimate with you. This would just make me feel like an body with only one use, pleasuring them without me being part of it. Visits strip clubs, does not pay for special services like lap dances. It would depend on their reasons for going, if just to see naked women, I would feel pretty put out and annoyed, but not really feel they were cheating.
Visits strips clubs, no holds barred.
Other's, I wouldn't mind that much, 3. I would tell them all that went on.