It does not necessarily mean anything - he may not be interested in your smiling.
A guy may like kissing you if he initiates it frequently, communicates his enjoyment of the experience, and shows enthusiasm and passion during the kiss. Additionally, positive body language such as leaning in closer or holding you tightly can indicate his interest.
If your boyfriend cannot stop kissing you, it may be a sign of violence. Dump that guy.
It means he's nice, don't look to into it.
act nice and smile.
If he's a guy it means that he's gay.
He wants to have sex with you and "put a smile on your face."
It mean he is trying to let you know he likes you by complimenting you.
That you like him
It means he likes you.
The dream could express remaining emotional ties with the guy.
he has acknowledged your existence, good for you! (if you like him)