Summary

The article suggests two science-based indicators that a man may be more likely to cheat: the use of more sophisticated vocabulary around someone he is attracted to, and having larger testicles, which is associated with infidelity in both human and animal studies.

Abstract

Infidelity can be a challenging issue to detect in relationships, but recent insights from science offer potential signs to look out for. The article highlights that men tend to employ more complex language when conversing with someone they find attractive, as a way to impress and appear more intelligent. This change in communication style could be a subtle hint of infidelity. Additionally, biological factors such as testicle size have been linked to a higher likelihood of cheating, with larger testicles being associated with increased sexual activity and potential for infidelity, as observed in various species including humans. While these signs do not confirm cheating, they may warrant further attention and open communication in a relationship.

Opinions

The article implies that a sudden improvement in a man's vocabulary, especially when interacting with a particular individual, could signal romantic interest and potential infidelity.
It suggests that the size of a man's testicles could be an indicator of his propensity to cheat, with larger sizes being correlated with a higher likelihood of infidelity.
The author notes that these signs should be considered with caution and in context, emphasizing the importance of communication over jumping to conclusions.
The article posits that while science can provide insights, personal judgment and open dialogue remain crucial in understanding a partner's behavior and intentions.
It is also mentioned that larger testicles are associated with a higher risk of testicular cancer and are more common in species with shorter lifespans, which may indicate a biological trade-off between reproductive success and longevity.

2 Science-Based Signs That Your Man Might Actually Cheat On You

His words and his testicles.

Infidelity is an automatic deal-breaker in most relationships, but it’s not always clear if someone's cheating or not.

Sure, you can check their phone and strap a GPS to the bottom of their car. But not everyone is ready to take those leaps into private investigation.

That’s where science comes to the rescue.

There are two science-based signs that your man might actually cheat on you.

1. His Vocabulary Suddenly Gets Better

According to Gad Saad in Psychology Today, men use bigger words when they are talking to someone that they find attractive.

Men often do this because a large vocabulary makes them sound smarter. And, as many of us already know, intelligence can be down-right sexy.

If your man starts changing up his vocabulary around a certain someone, he’s probably trying to impress her or him—and not necessarily for platonic reasons.

A 2008 study published in Evolutionary Psychology gives us further insight into how to catch your guy red-handed (red-tongued?):

The data from the current study showed that, as predicted, priming by photographs of young female models and an imagined romantic encounter led male participants to use a greater number of lower frequency words. That is, imagining spending time with a desirable partner led to a display of linguistic ability from which they could not benefit in the current setting.

What does that mean?

Guys use more rare or fancy words when sexually attracted to someone. Therefore, if your man starts dropping words like “verbatim" and “vis-à-vis” out of nowhere, that’s a clue that he might be attracted to the other person.

Unless the other person is a boss, potential boss, or authority figure of some kind, take special note.

He might be cheating or thinking about cheating.

“You have had me spinning for days, for I am drunk off the words that flow endlessly from your deep red lips that taste of wine.” — Karen Quan

2. He Has Big Testicles

Yes, bigger ball size correlates to cheating. If you are shocked, you might also be surprised to know that this information is widely known (but debated) in the scientific community.

How so?

An article in Phys.com goes as far as to say that: Huge testicles = infidelity.

To be fair, the study states that testicle size in a male partner actually indicates infidelity in both the man and his partner (particularly, his female partner).

Much of the basis for the study is gathered from the animal kingdom:

The testicles are also large in animals that have many females.

Male lions have huge balls. All the females in the pride must have sex at the same time. When the female lions in the pride are in heat, he must mate with all the females every half hour for three days.

That’s fascinating, and a bit impressive, but those are lions.

What about other primates, since they are biologically closer to us as humans:

Bonobos in particular have huge testicles. They mate with everybody. There is an abundant flow of semen. Those who leave the greatest amount of sperm have the largest chance of fathering offspring.

Just for comparison, the testicles of an adult human male are about one and a half times larger than those of a gorilla.

Thus, men with bigger testicles might be more prone to sexual infidelity.

It doesn’t guarantee that he is cheating, just that he may be more vulnerable than men with smaller testicles.

Large testicles are also a risk factor for developing testicular cancer later in life. Male animals with shorter lifespans often develop oversized testicles to increase the probability of reproduction.

For example, the Phys.com article points out:

Animals with short lifespans may have enormously large testicles. In one type of grasshopper the testicles occupy half their body mass.

That’s a lot of testicles.

Final Thoughts

Here are the takeaways from this article to know if your man might be more likely to cheat:

He starts using big, fancy, or rare words around another person of his sexual preference.
His testicles are big.

In both cases, it’s helpful to pay attention, consider context, and not leap to conclusions. Open and honest communication is often the best defense against unfounded assumptions.

If you worry that your boyfriend, partner, husband, or male lover might cheat, talk to him.

Express your feelings without judgment. Then, give him a chance to talk, explain, or come clean.

Use science to your advantage, but don’t forget to use your brain. You are one smart cookie and that man is lucky to have you.

I bet he knows that, too.

Next read: Casual Dating vs Serious Dating: 6 Ways to Know Your Status