Did your relationship end some time ago? If your ex has moved on with his/her life, and you are still hoping that the two of you get back together again, then there are a few things that you need to consider.
In this situation, it is possible to get your ex back, but it all depends on why he/she broke up with you in the first place.
If you haven't had any contact with your ex since the break up, then you should give him/her a call as soon as possible.
It is very important that you don't immediately start to talk about your break up though.
Remember, you haven't spoken to your ex for quite some time, and you really don't know what is going on in his/her life right now.
Speak to your ex simply as a friend.
Have a nice chat, say that you were thinking about him/her, and were wondering what he/she has been doing lately.
Keep the conversation casual, and as happy as possible.
Don't make contact with your ex for the next few days.
He/she is very obviously thinking about you and your call, and could very well make contact with you first.
From now on, every time you talk to your ex, keep the conversation friendly and casual, but listen to what he/she has to say, and how things are said to you.
This will give you a very good indication as to where you stand with your ex.
If he/she mentions that there is someone else in his/her life, however difficult this may be for you to handle, stay friendly with your ex, and get on with your own life.
Accept that he/she is involved with someone else, and there is no future for you with your ex.
However, if your ex keeps talking to you about the good times you had together, and perhaps says that he/she should never have broken up with you, then you can be sure that you WILL get your ex back.
Just take things slowly though.
You have been apart for quite some time, so it is almost as if you need to get to know each other all over again.