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Detective Column

This column is the English version of a column written in Japan.

Disclaimer
This column was originally written in Japanese and has been translated into English for your convenience. Please note that the legal information and references discussed here apply specifically to Japanese laws and regulations. If you require legal advice or information relevant to your own country, we recommend consulting a qualified professional who is knowledgeable about the laws in your area.

Women’s Affairs Are Hard to Detect! Excuses Women Use When They Cheat

From gossip columns to celebrity scandals, infidelity frequently makes the news. Often, it’s the man’s cheating that gets spotlighted. Yet, the reality is that both men and women cheat, and women are sometimes even better at hiding their affairs, making them harder to catch. Why are women so skilled at concealing infidelity, and what excuses do they use when they cheat? We interviewed women to find out. If you suspect your wife of cheating or are struggling with infidelity, read on for insights.

Are Women’s Affairs Really Less Likely to Be Discovered?

At a glance, media coverage seems to highlight male infidelity more than female. But looking at the data, both men and women cheat. One major investigation agency conducted a survey of 14,000 men and women in their 20s to 60s. The results:

In a relationship with someone other than their spouse or partner:
Men: About 27%
Women: About 16%

Though men’s rate is slightly higher, women also cheat. Another study from the Japan Society of Sexual Science shows that married women’s affair rates have risen since 2015, tripling over 12 years based on their survey. Moreover, some experts estimate men’s affairs get caught over 90% of the time, while women’s infidelity detection rate may be under 10%.

In other words, women do cheat, but their affairs are less likely to be uncovered. Perhaps that’s why we mostly hear stories of “husband cheating” from friends or the news. Let’s explore why women’s affairs are harder to detect.

Why Are Women’s Affairs Harder to Detect?

If you’re worried your wife might be unfaithful, why are her secrets less likely to come to light?

Women Notice Details; Men Often Don’t

Women are adept at observing subtle changes in their spouse’s attire, mood, or behavior. Men, on the other hand, tend to overlook such details. If a wife adjusts her style to suit her lover’s tastes or buys new lingerie, her husband might not even notice. This difference in observation skills makes women’s infidelity harder to detect.

Women Often Handle Household Tasks

Classic signs like perfume on clothing or lipstick on a collar are typically spotted by the spouse who handles laundry and cleaning—often the wife. If roles are reversed or shared, husbands might miss these clues, giving cheating wives an advantage.

Men Dismiss Suspicions as Misunderstandings

Some men, less observant and wary of false accusations, might think, “I must be mistaken,” or “My wife wouldn’t do that,” and avoid confronting the issue. This hesitation lets the affair continue undisturbed, making discovery even less likely.

To better identify infidelity, let’s see what excuses women use. Recognizing these patterns might help you detect her affair sooner.

Excuses Women Use When Cheating

We asked women with cheating experience about their go-to excuses:

“I’m Going to a Work Party”

“I’ve used year-end parties or small work gatherings as cover. I actually attend the company event, but slip away during the second round to meet my lover. Since the initial party is real, it’s a believable excuse.”

For many married women, the workplace is the primary social setting outside home. Thus, workplace acquaintances often become affair partners. Using a real work event as cover makes it hard for a husband to suspect anything.

Replacing the Lover with a “Female Friend”

“On days I plan to meet my lover, I tell my husband the exact itinerary, but say I’m going with a female friend or a mom acquaintance. If he finds a movie stub later, he won’t suspect cheating, just a girls’ outing.”

Women consider suspicion and prepare plausible alibis. Even if you find a suspicious receipt, they have a ready explanation. Keep track of what she claims and when—these details might help later.

If Caught, Claiming “They’re a Friend or Relative”

“I was once seen by my husband with my lover, but I insisted, ‘That’s just a relative/friend.’ By not showing intimacy in public, it’s easier to dismiss suspicions. Most women would handle it smoothly.”

Even if caught in a suspicious scenario, some women confidently deny any wrongdoing. If the husband doesn’t know all her relatives or friends, he might accept the explanation.

Using Menstruation as a Reason to Refuse Intimacy

“If I’m not in the mood and worry he might suspect an affair if I refuse sex, I say I have my period. It’s a natural excuse that won’t raise suspicion.”

Refusing intimacy can spark distrust, but claiming it’s “that time of the month” provides a simple, believable reason. For husbands, challenging this is tricky without a thorough understanding of her cycle.

Conclusion

As shown, women who cheat are highly skilled at hiding it, making detection difficult. If you’re worried, don’t rush to gather proof alone—your suspicion might tip her off. Instead, consider professional help from a detective or investigation agency. Many men now seek their services as well. Begin with a free consultation to guide your next steps and quickly resolve any infidelity issues.

Japanese Detective Column