Sometimes the "not okay" people are the nicest as they need "niceness" back more than anyone, I've found.

That's why it's so hard to know when those people might need a kind word.

No, just because they smile at you, it doesn’t necessarily mean they’re OK.

"(What they do)
(They smile in your face)”

-Huff/McFadden/Whitehead, The O’Jays, “Back Stabbers"

It doesn't mean that they are okay, and it also doesn't mean that they are nice either.

Very true.

Don't know how you feel right now so I'm sending you hugs 💙🤗

Ted Bundy was very charismatic and popular with the ladies.
Then...

Very true...

Cautiously check behind every smile..

Just because someone smiles at you doesn't mean they're nice.

You're so right

Truth

Very true. Some people are very well practised at seeming ok. Indeed, some depressed people can seem the most content just before they attempt suicide.