There’s the rub. I consider allowing a gay couple, especially if it was my son, to act like they are married at my home tantamount to affirming.
If my son brought a prostitute home to my table and I let it slide, what message does that bring?
Or for an example that actually happened, one of my wife’s uncle’s cheated on his wife with his secretary, divorced his wife, and starting bringing his secretary to family events. The family accepted her. He married her and he basically abandoned the kids from his previous marriage. The family didn’t say a word. A couple years later, at his mother’s funeral, he went to the podium and had the gall to say in front of the family that she was the reason he was the Catholic he was today, as if his terrible behavior was totally acceptable. The family didn’t say anything(again).
Do you think the family’s actions helped, or hindered, him potentially coming back to Christ?
Lines have to be drawn somewhere or your faith is meaningless, as you will roll over and allow any vice to happen for the sake of getting along.
There’s no black and white instruction to follow, but, in itself, not allowing a gay couple at your table does not mean you are in any way uncharitable.
At the core we probably agree with core teaching, but disagree with how to accomplish our goal of spreading the gospel. I respect that.