Every gay marriage that was talked about was an open relationship.Because the question of sexual orientation has only been asked in the last three survey years and homosexuals comprise a couple percentage points of the total population, sample sizes are way too small to jump to empirically founded conclusions. That said, the share of married respondents, by sexual orientation, who have "had sex with someone other than your husband or wife while you were married" shake out as follows:
Not a one of these gays who were married, or planned to get married, held any pretense of practicing monogamy. When the topic of promiscuous married gays came up, the only surprise was the blasé avowal of the fact.
Homosexuals (n = 15) -- 46.7%
Bisexuals (n = 37) -- 37.8%
Heterosexuals (n = 3,724) -- 18.0%
GSS variables used: SEXORNT, EVSTRAY(1-2)