“A true friend is someone who knows there’s something wrong
even when you have a smile on your face.”
Because they care enough to notice, wish to understand, and support.
If you have a friend like this, be grateful and relish him/her.
Yes, I agree. A true friend can also tell in the tone of your voice if something is wrong without seeing your face. Those kind of friends are very special and not too many. They will also tell you the truth even if you don’t want to hear it.
Timing and tone help.