It means that the person is happy but is not showing it.
he is happy
nothing
Cyclops smiling with a uniabrow
If he always smiling at you then he probably likes you, unless he's always smiling.
Smiling. This is my son's name
The person could be thinking of something funny, or he/she is in good mood or the person is smiling at you.
It means he realised he was too "forward" by smiling at you, so is now trying to control himself.
When a girl is constantly Hitting and being mean to you and smiling she most likely flirting with you but if she is not smiling she is probably serious which means she does not like you. It goes both ways.
smiling (it's a plural adjective)
Our can't stop smiling
Sure does, and it uses lots less facial muscles, too. Smiling uses about 7 facial muscles, where frowning uses 54.
It doesn't necessarily mean anything.