Melissa Fritchle discusses the nature of monogamy and how sex and expectations sometimes lead to misunderstandings. <br /><br />Connect with Melissa: www.yourtango.com/experts/melissafritchle<br />And www.mf-therapy.com<br /><br />YourTango is your source for smart talk about love, sex, dating and relationships. Whether you're married, single, taken, engaged or "it's complicated," check out our videos for the best love and relationship news, entertainment and advice.<br /><br />Follow us on Twitter: http://twitter.com/yourtango<br />Become friends on Facebook: http://www.facebook.com/YourTango<br /><br />http://www.yourtango.com | Smart Talk About Love