It is not a secret to anyone who has ever truly fallen in love that moving on after losing that special person is particularly difficult. The loss is more painful, and it takes longer to get over it in part because we consciously or subconsciously harbor hope that somehow we will be able to get back together. Sometimes, we don't realize how much we love our partner till we break up.  

In most cases, this hope of getting your loved one back is futile. There is a reason why someone left you, and it's probably not because you asked for your partner to break up with you. Thus, asking someone to return or trying to convince him/her that you are actually right for each other will rarely result in the two of you getting back together. On the other hand, if you feel that you are truly, truly in love with each other, and that your break-up was a result of an impulse, a moment of weakness that brought about an unusually ugly confrontation or a fight, etc., it might be worth trying to make up and get back together, learning from your past mistakes and making sure that you avoid such conflicts in the future. Here are a few things that you should and you should not be doing when you are trying to get back with your loved one:  

1. Make sure that enough time passes so that whatever anger and resentment has been built up between the two of you due to the recent break up is gone. Making a contact too soon is pointless and is a sure way to get into yet another argument thereby reducing your chances even further to get back together. 

2. When you contact your ex, make sure that you don't start your conversation by begging to get back together. On the contrary - keep your conversation light and casual. Act and talk like you have no agenda at first, and see if your contact is even welcome before you consider bringing up the past and talking about your possible present and future together. 

3. Be ready to hear a "no" and finally move on. At a certain point, you must accept that you will have to move on with your life and respect your former partner's desire to not see you anymore. Remember - it takes two to "tango," and if one of you doesn't want to "dance," it's not going to work. If you have to move on, the article on overcoming a painful break-up will be helpful to you.  

Statistically, most couples who get back together eventually break up again anyway, but if you really love someone, this should not deter you from trying to restore your relationship. It would be of great help to your relationship, if both of you looked back at the problems that lead to your break-up in a rational, civil manner, without arguing or blaming each other for what happened, and figured out how you can avoid the same obstacles in the future. One of the first important steps is admitting to each other of your own mistakes and genuinely and open-heartedly apologizing.