But of course they do. Perhaps you're not old enough to remember when lubricious Christian/Evangelical books started coming out in the 70's and 80's, somewhat pink in the face in their effort to prove that they were not prudes and just fine with most of the Sexual Revolution as long as it had a fig-leaf of God-talk. Having agreed on just 3 rules
--- all the varieties of heterosexual indecency ran triumphant through the churches.
The shelves are now even fuller of Christian books which, centering on romance, emotion, relationship and pleasure, go on to permissively discuss mutual masturbation, oral sex, anal sex, role playing, surgical sexual modification, "mood enhancement" (fantasy, images, drinks and drugs), trash talk and sex toys.
Look in the Marriage and Sexuality Dept (LINK) of any Main Street or Online Christian book outlet, and you'll see hundreds of examples of what I mean.
Since most of them see fertility (procreative potential) as, at worst, an annoying glitch, but one that can be fixed!--- and at best a somewhat unrelated lifestyle option --- this stuff is actually gay-marriage-for-heterosexuals.
Yes, Mr. And Mrs. satisfaction-centered Christian: sizzling, self-actualizing and sterile. It shouldn't be surprising the gays moved in to claim it: it's a perfect fit.
I will be more precise. Heterosexual perverts do not try and COERCE Church thinking via the courts as homosexuals do. That is the difference.
Otherwise such things as polygamy, polyamory (Orgies), pedophilia and bestiality would be forced on Churches as the new social normal.