How do you get a divorce on sims life stories?

you have to make them really mad at each-other by arguing OR you make one of the married couple fall in love with another sim while the other married sim watches them.. then automatically that sim gets angry and slaps the other sim across the face. Then if you click on them for options it will say propose...divorce[the only sad part is is that they hate each-other and will take a lot of time for them to be friends again