http://www.rd.com Sat, 25 May 2013 13:01:56 +0000 http://backend.userland.com/rss092 en-US Reader's Digest), author Chrisanna Northrup interviewed more than 80,000 people around the world to compile some quantitative data on love, marriage, sex, trust, and more. Here are the top lessons learned from the couples who ranked themselves happiest.]]> http://www.rd.com/slideshows/lessons-in-love-happiest-couples/