My apologies - I worded it poorly. I meant I was uncomfortable with pro-gay churches that openly reject monogamy, fidelity, and traditional Christian morality. Not that there was so much a double standard thereof.
You're still not really clear. What 'traditional morality' are they rejecting because they are also pro-gay? Which churches? Unless them being pro-gay is your main issue with them, not a convoluted defense of 'sexual ethics.'
I mean there are examples of conservative vehemently anti-gay churches and congregations where infidelity, abuse and remarriage after remarriage is rife. My own parish priest had an affair with a married woman. If you want to split hairs.
If a church holds to the sexual ethics of fidelity and allows gays to be married in that church they also tend to expect the same standards. Its why a lot of gay Christians choose to get married there. If the church doesn't hold to these matters and all the straights are allowed to do what they want then yes that tends to apply to the gays too.
But being pro-gay has nothing to do with either of these outcomes.