What is a short summary of the story, The World Has Many Butterflies, from the collection, You Think It, I’ll Say It?

In the story, “The World Has Many Butterflies,” a bored housewife named Julie becomes enamored of her husband's coworker Graham as a distraction from her dull suburban existence. She awkwardly propositions Graham, only to learn later that he, too, is involved with a younger woman.