Research for which is dubious, as I suspect some damage control was implemented after early reports stated homosexual relationships were quite rarely monogamous. And what is reported is muddled, partly due to the terms themselves, while the likelihood of lying when asking coupled people if they are monogamous is high (many people even lie about their frequency of church attendance).
In 2013 Slate stated
Mundy writes about an old study from the ‘80s that found that gay couples were extremely likely to have had sex outside their relationship—82 percent did. That was before AIDS and the great matrimony craze in the gay community, while The Gay Couples Study out of San Francisco State University—which, in following over 500 gay couples over many years is the largest on-going study of its kind—has found that about half of all couples have sex with someone other than their partner, with their partner knowing. She also tells the story of Dan Savage, who started out wanting to be monogamous until he and his partner had kids, and then they loosened up on that in order to make their union last. “Monogamish” is what he calls his new model. But as Mundy asks, can anyone out there imagine a husband proposing that same deal to his pregnant wife?
A psychotherapist writes in "The Gay Advocate"(2016) "the Marriage between two men is -- in my experience as a psychotherapist -- dramatically different than heterosexual marriage. It's a double testosterone marriage. .. it is my experience that about half of our relationships -- over time -- are not 100% monogamous. Whether married or not, many gay relationships begin to "open up" after the first few years."
A survey of 2017 reported that of a (mere) 576 respondents, 85% of single men were seeking monogamous relationships, and with 86% being monogamous couples. Yet only half of younger gay respondents "equated marriage with monogamy, and non-monogamous couples were as likely to be married as monogamous couples." (https://joekort.com/new-study-younger-gay-men-trending-toward-monogamy/)
A Gawker story [https://www.gawker.com/master-bedroom-extra-closet-the-truth-about-gay-marri-514348538] last week [which Google ignored in its first 50 results on Research on monogamy among same-sex marriage of men] explored this problem in greater detail. In the fight for marriage equality, the gay rights movement has put forth couples that look like straight ones, together forever, loyal, sharing assets. But what no one wants to talk about is that they don’t necessarily represent the norm:
The Gay Couples Study out of San Francisco State University—which, in following over 500 gay couples over many years is the largest on-going study of its kind—has found that about half of all couples have sex with someone other than their partner, with their partner knowing.... in legalizing gay marriage, we are accepting a form of sanctioned marriage that is not by habit monogamous and that is inventing all kinds of new models of how to accommodate lust and desire in long-term relationships. (https://slate.com/human-interest/2013/06/most-gay-couples-aren-t-monogamous-will-straight-couples-go-monogamish.html)
In 2020 Kellie L. Barton of Walden University found,
Currently, only a relatively small number of researchers within the field of gay and lesbian studies have contributed to the literature on gay men and monogamy. Anderson (2012), for instance, found that one of the unique features of intimate relationships of gay men is the departure from the normative values characterizing monogamy. LaSala (2005) stated that gay males are more likely to be engaged in unions that are lenient towards extra-relational sex. Adams (2006) found that among a study of gay male participants, only 26% chose to practice monogamy. A majority of those in monogamous relationships had been together for less than 3 years. (https://scholarworks.waldenu.edu/cgi/viewcontent.cgi?article=9534&context=dissertations)
By 2021, we see reports such as "30% of Gay Men Are in Open Relationships, According to New Study".... According to the Gay Therapy Center study, about 42% of gay men in open relationships tell their primary partners about other sexual contacts that they have, while 33% operate under a “don’t ask, don’t tell” policy. (https://www.them.us/story/30-percent-gay-men-open-relationships-new-study)
Should expect about the same honesty to survey questions?.
`"Dr. Amy C. Moors (she/her)" an Assistant Professor of Psychology writing for The National Center for Institutional Diversity" states in 2022 (no, this is not 1950)
In the U.S., 77% of bisexual and gay men and 56% of bisexual and lesbian women have been in a consensually non-monogamous relationship at some point during their life. This rate of prior engagement is two times higher among lesbian, gay, and bisexual people than heterosexual people.... Currently, there are three cities in the state of Massachusetts — Arlington, Cambridge, and Somerville — where people engaged in consensual non-monogamy can obtain multi-partner domestic partnerships. (https://medium.com/national-center-for-institutional-diversity/lgbtq-activism-should-include-consensual-non-monogamy-996ae2321760)
I’ve done the math. Virutally ALL adult “gay” males have a Grindr or other “hook-up” app account.
What are they doing in these apps if not hooking up?