A new study found the only two things you need to do/have to be happy in your relationship are SLEEPING NAKED and CLEAN SHEETS.

The study found that couples who sleep naked are happier than couples who sleep in clothes and couples who sleep on clean sheets are happier than those that don't.

The survey was conducted by COTTON USA, an organization that promotes the interests of the US cotton industry.   Oddly enough they recommend 100% Cotton Sheets for maximum happiness in your relationship.

Stephanie Thiers-Ratcliffe, International Marketing Manager from COTTON USA said: “There are many factors which can affect the success of a relationship, but one factor which is often overlooked is the bedroom environment“. Bedding made from 100% U.S. cotton feels extremely soft against the skin, encouraging openness and intimacy between couples and ultimately increasing happiness.”