You shouldn't like someone who is already in a relationship.
Mike, Amy and Jeff are at the bar when Amy, who is married asks Jeff if he wants to have a sexual affair with her.
Jeff wants to respond to Amy's question.
Jeff tells Amy that because she is married, he does not even think of her as a possible object of affection.
Jeff tells Amy that he would love to have sex with her and is open to a long term affair.
Mike is proud that his friend is a stand-up guy who can do the right thing.
Mike is shocked that Jeff and Amy both have such low morals and feels embarrassed to be in the group.