Maybe I am asking the wrong people but this non-Christian would lie to know;
The leader of Egypt's Al Azhar University has asked how Christian leaders who accept same-sex marriage will explain that position to Jesus Christ.
https://www.catholicculture.org/news/headlines/index.cfm?storyid=27593
Any true Christian/Catholic does not support such things...
There are numbers of people who are only nominally Christian/Catholic, but do not practice any of the Faith.
Those who are only nominally Christian/Catholic will certainly try to justify themselves to no avail.
Yet, those who are truly Christian/Catholic will not have to explain anything to Our Lord since He knows that they have always been against it.
Does this help? :-)