So the argument could start with after they have the twins, Kendall doesn't want to "do it " anymore for over 5 months and then one day she sees a drunk Tayler "doing it " with this random girl and then the next day Kendall wants to get a divorce but Tayler doesn't know why because he was drunk and they start fighting and then Harvey hears and starts crying, along with the twins. I hope this just about helps because.... Yeah. This is the best I got for now