You ask her if she's happy.
"Yea, I'm happy." She responds in a cheerful way. But, what you don't hear is the "I guess" she mumbles under her breath.You ask him if everything is okay. "He responds confidently with a "yes" but, again what you don't hear is the "I guess" mumbled under his breath.
Everyday they tell you they are okay. Everyday they lie... straight faced lie to you everyday. They do this to protect you from what they are feeling...because their thoughts are dangerous, and one day they will become a grenade and obliterate everything around them.