Couples who focus on their friendship are less likely 
to split than those who emphasise sexual chemistry, a new study from Purdue University reveals. The best part of all: chummy couples are also more satisfied in the sack than sex-centred ones. “Friendships are frequently based on openness and shared interests,” says study author 
Dr Christopher Agnew. “So friendship with your partner may mean you’re more open about your desires, leading to greater sexual fulfillment.” Best ways to foster a lasting friendship? Be willing to forgive, put her needs before yours and always try to give her the benefit of the doubt.