Cheating on a loved one is unfortunately a mistake many people have made. Because you've cheated doesn't mean that you no longer love your boyfriend or girlfriend. Rather it means that there is an underlying issue that you two need to work out prior to getting back together. If your ex agrees to speak with you, keep an open mind and hear them out. Express how you feel and listen to how they feel. This is the only way to get your ex back and ensure that this won't happen again.