A man in his early 30s has sought advice regarding a difficult situation involving a close friend who is engaging in behavior that could jeopardize his long-term relationship. According to the man’s account, his friend has been frequently drinking, getting into trouble, and recently admitted to having an affair with a co-worker despite being in a committed relationship with a woman who is also a mutual friend.

The man described his friend’s conduct as immature and inconsistent with his age, attributing it in part to pressures at a new job where younger colleagues may influence his actions. Despite multiple attempts to address the issue directly with his friend, the man feels his efforts have been unsuccessful. He now questions whether he should inform the friend’s partner, whom he cares about, of the infidelity. While he reportedly knows of only one instance of cheating, he suspects there may be others.

The advice given emphasizes the complexities involved in such situations. It suggests attempting one more honest conversation with the friend, highlighting how his behavior has placed the questioner in a difficult position and expressing concern for the girlfriend’s well-being. However, the advice also cautions against revealing the information directly to the girlfriend, noting that such disclosures can lead to the "messenger" being blamed or ostracized, especially if the girlfriend reconciles with her partner.

Furthermore, the advice highlights the potential inevitability of the truth coming out, given that such facts often become common knowledge over time due to gossip and indiscretion. It recommends informing the friend that if further misconduct occurs, the questioner does not want to be made aware of it.

The source of the advice also shares a personal experience involving friends of a spouse who was unfaithful. The friends ceased social engagements to avoid complicity in the deception, which the adviser respected as an honest response.

Overall, the case presents a common ethical dilemma about whether loyalty to a friend or to a friend’s partner should take precedence when confronted with knowledge of infidelity. The advice underscores the importance of honest communication, awareness of potential repercussions, and recognition of the emotional toll such situations can bring to all parties involved.