I knew all of that.
In all honesty, I never quite saw where anything you said could be taken as a joke. ( This is not to say that particular response was correct in any way. ) But other than you saying that I am sweet on you, I wouldn't take anything you have ever said to me as a joke either. And I have a very good sense of humor.
I, not events, have the power to make me happy or unhappy today. I can choose which it shall be. Yesterday is dead, tomorrow hasn't arrived yet. I have just one day, today, and I'm going to be happy in it.