You can hardly walk up to complete strangers and say, "Good for you! You've risked banishment and brutality and ostracism just to be together, and I applaud your choice! You're in the vanguard of social change, and even though it's hard on you, the generations that come after you will have an easier time of it because you were brave enough to fall in love." So instead I told them I liked their baby. It means the same thing, but it's more socially acceptable.