If it was one of my children, I would defend their decision and the validity of their relationship to my dying breath. I would be proud that hubby and I had raised a strong child who wasn't afraid of a little adversity (from outside sources, of course) and who had strength of character to be honest with themselves and others. I would hope that they would never be concerned about our reaction or that we would disapprove; but as my son is only 3.5 and the other isn't born yet (due in March!! ) it's obviously far too early for conversations on the topic of sex. Never too soon, though, to lay the groundwork and discuss other things openly.