In reality, we see a serious side of our father and hence we talk to him very thoughtfully so that he does not spoil his mood, but when he laughs cheerfully, the whole house becomes bright. You have done a great job of creating this glow. By reminding my father of his wedding day. He must have remembered some very good memories, due to which he was smiling a lot. In this way there is happiness in the family. May you all remain happy with your family and keep smiling.