What would you do if one of your children (if you don't have any pretend you do for the sake of the question) came out and confessed to being homosexual? How would you react? Kick them out of the house? Disown them? Beat them with a belt?
It's extremely difficult to answer this question in advance of the event. I believe that predominantly homosexual attraction is a sexual disorder, and my child would have been taught this. A lot would depend on two things. First, in the process of coming out, the child had come to reject that interpretation, seeing homosexual attraction as healthy but not mainstream. Second, how old is the child?
Obviously, if the child is grown up, things are much different than if the child is still, say, teenaged. The younger the child, the more right the parent has to demand certain behaviors from their children. I can insist, for example, on my 14-year-old child remaining chaste, regardless of sexual orientation. I can also take more authority over the child's education and counseling or whatever. If the child is in their 20s and lives independently, the parent only has moral persuasion available to influence behavior.
As to the first issue, again the response depends somewhat on age. If the child is older, grown up say, then I can only remind him or her what they've been taught. If they insist on rejecting that, I guess I'd have to insist on chaste behavior while under my roof. What he or she does in their own bedroom is no concern of mine.
It's more difficult to imagine whether I'd go to a gay wedding or how I'd respond to gay PDAs. (It would certainly be wrong for the gay child to flaunt his or her sexuality in my presence, knowing I object.) I hope that my love for my child would create a certain allowance for such things, but I just don't know. How could anyone know, in advance of the event?