Fidelity

According to wiki: Fidelity implies the unfailing fulfillment of one's duties and obligations and strict adherence to vows or promises.

It's been a while since I thought of this word. It's one of the most important thing in every relationship. Never betray. But why do people cheat? Why do we have to hurt out partner's feelings? Too many reasons, too many answers, but all of them are unacceptable. You cheat because you're tempted. You're tempted because you're weak. You're weak because your love is not strong. Every person have their own weaknesses. We're not made to be perfect. We're sinners from the very beginning. But we can be punished and learn. We always have a chance to make things right, if not, we still have to make things right, or else we'll be stuck on shadow. Our own shadow.