This video shows "How to get over a big break up". Even if you are in love with the other person, you have to remember that they might not be in love with you. What may help you is to write a list of all the bad things about that person, for example the things that didn't satisfy you in the relationship. You could make some changes in your life, remove the things that remind you of the other person. You could take the things that remind you of that other person, and write a negative memory on each of the items, keep them in a box, and look at them from time to time.