It's admirable to remain loyal to one's romantic partner.
Curtis, an engaged man, is at a friend's party when a beautiful woman tells him that she's recently single and starts flirting with him.
Curtis wants to have a great time at the party.
Curtis explains to the woman that he's engaged and spends some time introducing her to his good friend who, like her, is also newly single.
Curtis chats with the woman and spends the evening flirting back and forth with her.
Curtis leaves the party feeling happy that he was able to set up his friend with a beautiful woman.
Curtis ends up questioning the quality of his relationship with his fiancee since he had such a great time with another woman.