There is a popular belief that the first year of a relationship sets the tone for everything that follows, and a growing body of psychological research suggests that couples who choose to travel together during this period may be doing something far more significant than simply taking a holiday. Travelling as a couple in the early months forces two people out of the comfortable scripts they follow at home and into unfamiliar territory where their real personalities, stress responses, communication habits and emotional flexibility all come to the surface at once.