it is important to read to the end. but if you don't the end is that Margot and Robert have awful sex. after he tells her that he is 34. she leaves and tries to think of ways to tell him that it is over through text. eventually her friend texts Robert that Margot thought he was awful.
a couple of weeks later Margot spots Robert at a bar where herself and her young friends hang out. her friends, who she has told about Robert, shield her from him and get her out of the bar. Robert does nothing and keeps on drinking.
a day later she gets these text messages from Robert. desperate, angry, which end up with him calling her a whore.
i'll post my thoughts later.