It's important to be loyal to your romantic partner.
Ken is married to Jane and is out at a bar when he's asked by Cindy to come home with her.
Ken wants to respond to Cindy's proposal.
Ken tells Cindy that he is married, and he would never betray his wife's trust, so he'll have to pass.
Ken tells Cindy that he would love to come home with her as she's very attractive.
Jane is delighted to learn that Ken was faithful and that he can be trusted when out alone.
Jane is devastated that Ken has broken her trust and cheated on her and cannot forgive him.