My Sex Professor » economic model of sex http://mysexprofessor.com Have Better Sex Wed, 09 Apr 2014 14:00:56 +0000 en-US hourly 1 http://wordpress.org/?v=3.5.1 The Puzzle Box Model Of Sex http://mysexprofessor.com/love-and-relationships/the-puzzle-box-model-of-sex/ http://mysexprofessor.com/love-and-relationships/the-puzzle-box-model-of-sex/#comments Fri, 26 Oct 2012 14:00:51 +0000 Jeana http://www.mysexprofessor.com/?p=14964 http://mysexprofessor.com/love-and-relationships/the-puzzle-box-model-of-sex/feed/ 1