Imagine a married couple. We'll call the husband Bob; the wife, Sue. Four years into the marriage, Bob begins finding clues that point to Sue's possible infidelity. He asks her about these, but she manages to explain all of it away, albeit unconvincingly.
Clues of a possible affair continue to surface as the days and weeks pass. One day, Bob reluctantly acknowledges that his wife is indeed cheating on him, and he decides to confront Sue about her adultery. He sits Sue down and painstakingly presents her with all the incriminating evidence he has gathered.
Sue's eyes browse over the videos, the mysterious motel bills, the unfamiliar necktie found under the seat of the her car, and all the rest of it. After a moment, her expression ices over. She stands up, dismisses the evidence with a callous wave of her hand, and then stares at her husband with slit-eyed scorn.
"None of that is evidence of anything."
Bob lifts a handwritten love letter from the table. "You're kidding right? What about this?"
"I never thought you would stoop so low," Sue seethes.
"Stoop so low? I didn't investigate you. You left all of this lying around for me to find."
"Where do you find the nerve and audacity to attack and undermine the sanctity of marriage?"
"What do you mean?" Bob asks incredulously. "You're the one who undermined our marriage."
"I'm not talking about our marriage," Sue responds coldly. "I'm talking about the sanctity of marriage, period. Your behavior demonstrates that you are openly hostile to the institution of marriage and all that is sacred within it! You monster! How dare you?"
Note added: Please feel free to make the husband the cheating spouse if you find this more appealing. I have no preference, either way.