The final recognised stage is considered to be the “mature love” stage, where theoretically we have got to know everything we need to about our partner and have chosen them for the long term. It should be a time when there are no surprises, life is settled, the couple have gone through ups and downs, career building and children. They should, theoretically, be in tune with each other and the plans on the table. Yet, in my experience of working with couples for many years, it can be a dangerous time for a relationship.