If someone hurts you, betrays you, or breaks your heart forgive them, for they have helped you learn about trust and the importance of being cautious when you open your heart.
In life there is a lesson to be learned in all of your victories and all of your defeats. Don't let things like failed relationships bring you down or stop you from ever wanting to trust another human being again. Forgive those who have abused your trust, those who are supposed to be with you but act as if they are against you, those who have been willing to not only break your heart, but willing to betray you as well.