Question

'And the smile came by itself without any efforts.' Say why. When do people give fake smiles ?

Answer 1

because they are suffering from something,
but they haven't lose their hope.
that is why they smile.

Answer 2

Smile is thing which can make someone attractive. People have fake smile when they are not feeling good in a particular place and are forced to be there that time they give fake smile. Or when the situation is not under their control.

Hope it may help u.....