There is a saying that parents know best. That is not always true. Your parents can help you but if they are constantly giving your relationship problems then there is the line.
The only time that parents should interfere is if the guy is bad news. If you are dating someone who has been arrested or does drugs or hits girls then you should listen to them. If they don't like a guy just because he does not have a high paying job or is from a different religion than that is wrong.
When you are dating someone you have to be sure that the other person puts you first. As long as you have someone treat you right, that is the only thing that matters. When you have the person you love, love you back consider yourself blessed.
Some people have a hard time finding the one, so when you do find the one do not let him or her get away. Talk to your parents how you feel but let them know that you are continuing to see this person anyway. If they really love you and are good parents they will understand. Parents should want to make you happy and not control your life. If you listen to what everyone says and sacrifice what you want then you will never be happy. You also might miss out on all of the good things that life has to offer.