Being heart broken like this is killing you and you want your ex back. You still have a lot of friends, but your desires run deep for your ex and you are hurting. Getting your ex back would make all the pain go away, you must find a way to mend the relationship. Well, these simple steps should show you the way.

Prepare yourself, although you want positive results you are not sure of the outcome. Being together again is the optimal outcome but be ready in case you have to go to plan "B". In case things don't work out according to plan you should not be surprised.
Sometimes sinking a battle ship is easier than dealing with an ex, so be ready.

Keep plan "B" ready to implement in case things don`t work on your first attempt.

Express regret, arrange to meet your ex. When arraigning to meet your ex it is best to do it casually, and don`t come across as being desperate. A casual meeting is best because of the element of surprise is in your favor. When you meet with your ex simply ask the obvious questions first like how s/he has been and what s/he has been doing, then ease into some good memories the both of you shared when you were together. This will sort of break the ice. Tell your ex that you really regret that it all came down to this.

If your ex is holding any residual pain from the breakup it will vanish once you apologize/regret. Wish s/he your best and move on.
Renew the bond, now that the ice has been broken you will have to keep in touch and renew the friendship with your ex.

Keep in touch with your ex through emails, text message, or phone calls on occasions. Keep your contact with your ex brief until a time when you both feel comfortable again communicating.

Start meeting with your ex more often as time permits. Try and keep it to formal or informal gatherings at first. Just be around your ex and have some fun with him/her. This will further cement the bond
between you and your ex. Make sure your ex is comfortable at this point before you see each other on one to one basis again.

Make your intentions clear, start flirting again with your ex. Give him/her ample hints that you still like them and would not mind being a couple once again. If the response you get is positive than ask if s/he would like to go to a social event. Date for a few months and then take the next step.

Letting your ex know that you are only dating them at this time will gain confidence in your ex that you are serious about the relationship. On one such date when you feel your ex is vulnerable ask them how they would feel about dating you exclusively.

Don`t give up if your ex will not commit at this time, it`s just going to take more time to convince your ex that you are sincere with your intentions.

Being persistent in your endeavor to get your ex back will pay off in the long run, so don`t give up after the first try.