I’m bisexual. Other queer people’s experience of their orientation varies, but, as far as I’m concerned, I’m bisexual because gender feels about as salient to me as hair color when it comes to looking for dates. That means I’m already out of step with the Catholic Church before you even get up to gay marriage or any issue like that, because the Church thinks gender is much more central to someone’s identity than I do.(source)
I imagine I’ll do a lot more reading and pick a lot more fights over the next few years. I’m willing to not date women in the meantime, but I wouldn’t necessarily universalize that choice. ...
As to the larger political question: civil marriage is different than sacramental marriage. If people can’t muster a convincing argument against gay marriage that doesn’t depend on the revealed truths of the Catholic Church, then asking the government to ban it is like expecting the State to enforce kosher dietary law on everyone (or even only secular Jews). I still support civil gay marriage.