Because if you give your heart to another. While the other man is honest with you and with you, and if you are up to you, maybe it could be called back to the same.
If you give your heart to another person. While another man is honest with you and with you. And if someone is for you. Maybe it can not claim to regain the same anymore.
Because if you give your heart to another. While the other who is faithful to you and treat you very much. And if the person has the value for you. Maybe it will not be able to claim back the same anymore.