I may have missed the point of "gay marriage". What is the objective here? Monogamy ain't their thing. Is it just to dress up and have a "wedding"?
"A study by Bell and Weinberg conducted during the 1970s and published by the Kinsey Institute found that forty-three percent (43%) of white male homosexuals had had sex with 500 or more partners, and twenty-eight percent (28%) had had sex with 1,000 or more partners. Seventy-nine percent (79%) said that more than half of their sexual partners had been strangers. In 1985, Pollack found that gay men averaged “several dozen partners a year” and “some hundreds in a lifetime” with “tremendous promiscuity.”[ii] In their 1997 study of the sexual profiles of 2,583 older homosexuals published in the Journal of Sex Research, Paul Van de Ven, et al., found that “the modal range for number of sexual partners was 101-500.” In addition, 10.2 percent to 15.7 percent had between 501 and 1,000 partners. A further 10.2 percent to 15.7 percent reported having had more than one thousand lifetime sexual partners." numerous sources, to many to link - just Google the quote
Paul Van de Ven et al., "A Comparative Demographic and Sexual Profile of Older Homosexually Active Men," Journal of Sex Research 34 (1997)