One expert who offered tips was Monica Berg, creative director at the Kabbalah centre in Los Angeles, who claimed marriages need constant work.

'There are no stable marriages. There may be happy ones, but not stable ones. Either we are growing forward or falling backwards. This is true in all areas of our life... which is why I believe nurturing relationships is so important. We owe it to ourselves and those we love not to settle for mediocrity in anyway, and instead to nurture and allow our relationships to become the source of joy, support and love that they were intended to be,' she said.