Convince your parents making love marriage meet him / her: The first step to convince their parents a love marriage is doing to meet your girlfriend / boyfriend. Not even enter into any discussion with them before you meet that special someone. The purpose of this meeting is to establish your parents what a perfect husband / wife that he / she will do for you. Train your girlfriend / boyfriend accordingly prior to this meeting (Disclaimer: I'm not talking about putting up a false face to your parents I am emphasizing only needed to put their best foot forward when the found.).
Convince her parents of her marriage love for the creation of a mutual relationship: A better thing to do, however, is to introduce your girl / boy to his parents as a friend, at least a year before you plan to get married. Help them know and become familiar with each other. Later, when you bring up the issue of marriage with your parents, you're talking about someone they know very well. Hence convince parents of a marriage of love with the person they know so well and for so long that it would be much easier.
Convincing parents love their marriage based on compatibility: Explain the importance of compatibility and mutual understanding in marriage, which must essentially measured (if possible) before taking the final decision to his parents. Support goes far beyond caste, horoscopes, eating habits, family history and financial capacity.