I spent my weekend plowing my neighbor's wife. Nice, huh?
Not really. Why would you interfere in her relationship?
Honestly, she has such a great imagination and I learned a lot from her.
She's a cheater. Why would you indulge her disloyal behavior?
Cheating is only wrong when it hurts someone else. Besides, she cheated on her husband with me, not the other way around.
You took part in the infidelity, so it goes both ways. Even if you're single, you helped her wrong her husband.