Answer:In this delicate situation, you must carefully weigh the potential consequences of divulging your best friend's husband's infidelity, discovered through a company email, against your professional responsibilities. While your instinct may drive you to reveal the affair to your best friend for their well-being, doing so could breach company confidentiality policies and jeopardize your job. You need to consider the impact on your best friend's emotional state and your own professional integrity. Seeking advice from a trusted source and exploring indirect ways to address your concerns might help balance these conflicting interests, ensuring that you act ethically while minimizing harm to everyone involved.