What is a short summary of the story, A Regular Couple, from the collection, You Think It, I’ll Say It?

In the story, “A Regular Couple,” a woman named Maggie is on her honeymoon with her husband Jason when she runs into an old high school classmate named Ashley, also on her honeymoon. Over the course of several interactions with this other couple, Maggie grows increasingly hostile, but it becomes apparent that she really projecting her frustrations about her relationship with Jason and her professional life onto Ashley.