Solução:
I think it is based on the average number of years a person put up with problems or the monotony with a partner before acting out (destructive or constructive). Contudo, with today's economy, I read somewhere I do not remember, people could pay less to bite so the 7-year itch is delayed by 10-year itch.
I guess after the cutting phase, the results depend on whether people feel happy that they have not acted or itching. if they are happy for not having acted on it, then that peak? not itchy, honey.