http://articles.mercola.com/sites/articles/archive/2006/02/23/does-sexual-chemistry-last.aspxItalian scientists have determined that the changes to body chemistry which causes people to find new partners sexually attractive lasts, at most, two years. At that point, couples shift into a "stable relationship" period, and other hormones dominateenCommunityServer 2008.5 SP1 (Build: 31106.3070)