Hey Pandas, What Can't Be Said To Relatives, But Can Be Said To Strangers?

I've been feeling very tired lately, but I can't tell my wife about it because it's just sharing the pain and I don't want her to be unhappy (and of course she can't solve my troubles, and that's what I don't say a reason)

But she felt it, and I tried my best to look happy and say 'nothing'.