Because every relationship is different, it is not easy to learn how to win back ex after cheating. Among other things, being successful in this type of endeavor will entail learning  about why you cheated.  While it may be difficult, you may have to face the reality that you and your ex were not compatible.  At the same time, you will also need to understand the role of personal guilt in your desire to restart the relationship.  Once you have sorted out these issues, you may be able to begin the process of understanding more about your ex and their needs.