Most people have a strong desire to believe what a partner has to say. Trusting a partner creates a sense of security and comfort. No one really wants to think that a spouse may be lying, especially when it comes to infidelity. Rather than assume the worst, it's often easier to believe a "pleasant lie" than to acknowledge a "devastating truth." In fact, some people work very hard to overlook a spouse's infidelity, because to acknowledge the alternative is much too painful. This helps explain why the spouse is typically the last to know: Because knowing always causes a
Faithful spouse the most pain. And
Cheating Spouses take advantage of this. Cheaters often
Exploit their partner's desire to trust by telling their partners exactly what they want to hear ("I would never cheat on you.").