More than anything if you want to know how to get back with your ex, always ask yourself if this is the right thing to do, make sure that you are going to be better off with them than you are without them, if it is only going to turn bad again then all your work trying to figure out how to get back with your ex will be in vain, if you are not ready to give up on that love that got away you will want to know how to get back with your ex.
If love was once there then the possibility for it still being there may be real, while you might not be able to turn back the clock or make the mistakes disappear you can give that love another chance to live again, if you have both been able to step back away from the mistake(s) and have been given enough time to breathe you may be able to come back together just to talk, you won’t want to rush right back into it though.
You need to make sure that you are able to move from the past and have any unresolved issues resolved, work through the problems, if you can’t then you won’t be able to get back with your ex for very long, the break up may have happened because of one event, it could have been because of that one behavior that one of you could not handle the other doing, whatever the problem was you need to find out how to either accept to deal with the problem or find out how it can be fixed.
If the issue was one cheating on the other, that might be hard to overcome, trust has been broken and getting that trust back will be very hard but not impossible, overcoming a heartbreak because of that is difficult and it needs to be given both time and a reason to believe that there can be trust again, this is an area that marriage counseling or other type of couple’s therapy can be helpful.