If you think that your partner has been cheating, then take a look at their will. If a past lover is in there, then it is probable that some form of infidelity has occurred.
You know that when your partner deletes their messages to a past lover after being accused of cheating, then it is likely that they were being unfaithful in some way.
Terrifying, that the loss of intimacy with one person results in the freezing over of the world, and the loss of oneself! And terrifying that the terms of love are so rigorous, its checks and liberties so tightly bound together… Their relationship depended on her restraint… The premise of their affair, or the basis of their comedy, was that they were two independent people, who needed each other for a time, who would always be friends, but who, probably, would not always be lovers. Such a premise forbids the intrusion of the future, or too vivid an exhibition of need.