Science Reveals Why Straight Men Have Uncontrollable Gay Sex Fantasies

Straight gay fantasies

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Straight men who fantasize about gay sex

A popular theme within digital gaydom is to talk about straight men who have gay sex fantasies. It’s just part of ethos. Here at GPB, we’ve certainly explored the topic of bi-curious men who occasionally go gay.

But putting this aside, did you know there really are guys who identify as straight and dream about gay sex? It’s true! And thanks to recent scientific research, we now have a better understanding why.

Gay Fantasies

According to a peer reviewed study appearing in the Archives of Sexual Behavior, these types of homoerotic fantasies can happen to any man, regardless of sexual orientation.

What’s more, they aren’t something that can be controlled.



Much of this to do with a hormone called progesterone, a brain chemical that is produced in the pituitary gland and present in both women and men.

More: Straight guy has gay fantasy dream

Similar to oxytocin, progesterone is partly responsible for the formation of social bonds in mammals. Translation: It’s part of the chemical reason why humans develop friendships.

Straight Gay Fantasies: The Research

In this study, levels of progesterone were sampled and measured in 59 males. Afterwards, each participant was blindly assigned to one of three test groups. The breakdown was as follows:

  • Group 1 used neutral word puzzles
  • Group 2 used friendship words puzzles
  • Group 3 used sexual word puzzles

Results from the word puzzles were then correlated using a simple Likert scale questionnaire to assess homoerotic motivations. Example: The idea of kissing a wo[man] is sexually arousing to me.

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Straight guys and gay sex fantasies

Straight Gay Fantasies: Findings

The men who completed the friendship word puzzles produced a 26% greater homoerotic motivation when compared with guys who were given neutral or sexual puzzles.

More: Top reasons straight guys go gay

What’s fascinating is that males who had the highest concentrations of progesterone, when correlated with responses to the Likert scale, showed a 41% higher level of homoerotic motivation.

Translation: Guys with higher levels of progesterone were more likely to fantasize/dream about having sex with another man, most commonly a close friend.

Sidebar: We’re the first to say that the sample group was very small and can’t be used as a pathway to the general population. But the findings do offer important clues.

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Geologic Time Scale

Gayness in Early Hominids

If you believe that early man evolved during the Pleistocene Era some 1.8 million years ago, it follows that you trust scientific research that strongly suggests we were once a tribe of hunter gathers.

Right now, we are in the Holocene epoch; a period of time carved into the larger phanerozoic eon. You may be wondering why this is important to know?

Well, according to this study (and similar ones), gay fantasies (aka homoerotic motivations) may be traced back to our early, primal beginnings.

Credit: Caveman World

Think of this as an evolutionary carryover – a chemically based psychological echo.

Thousands of years ago, early hominids didn’t base behaviors on religious views. Instead, it was all about survival and trust.

This meant working as a team to capture food and bonding with one another through sex.

Gay sex.

FYI: There is some research to suggest that gay sex also happened as a way to show submissiveness to dominant, alpha males.

Keep in mind that sexuality continues to be researched. There’s still much that we don’t know.

Back to the study. Here’s what appears in the remarks section at the end of the report:

“Although much of the literature on the evolution of homosexuality portrays sexually antagonistic selection, overdominance, and homozygosity at multipleloci as mutually exclusive accounts, such exclusivity is not intrinsic to the theories themselves”

Lead investigator Dr. Diana Fleischman shares:

“From an evolutionary perspective we tend to think of sexual behavior as a means to an end for reproduction. However, because sexual behavior is intimate and pleasurable, it is also used in many species, including non-human primates, to help form and maintain social bonds.”

Fleischman concludes by stating:

“The research suggests that having exclusively heterosexual thoughts is a disadvantage — it’s better to be a little bit attracted to the opposite sex.”

Summing Things Up

Many parts of gaydom are consumed with the fantasy of straight guys having sex with other man. But it turns out, heterosexual men do fantasize each other.

More: Straight guy gets turned on by gay man

When it happens, it doesn’t necessarily mean they’re gay or bi. Instead, it could be a familiar tug from the past.


(2015) Diana S. Fleischman, Daniel M. T. Fessler, Argine Evelyn Cholakians. Testing the Affiliation Hypothesis of Homoerotic Motivation in Humans: The Effects of Progesterone and Priming. Archives of Sexual Behavior.

h/t: Queerty