The kiss continues for a long period of time and when finish he complements on how well you are kissing.
You would know if a guy like you kisses if he ask you to kiss him again, that mean he's into your kisses your a good kisser to him
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.
winking, flirting, hanging out with you, kissing your cheek, so on
Ask them if they like kissing you and they should tell you straight forward.
That you like him
It means he likes you.
I saw it in magazines - it had a pic of them kissing!
when he says he likes you.
iam in love with this guy but i do not know if he likes me or some other girl
If a guy likes you but you don't know him he may look at you or walk by you whenever possible.
http://www.wikihow.com/Know-if-a-Guy-Likes-You
If he slowly startes showing interest, but doesn't make any moves. These "moves" can include asking you out or kissing you or something along those lines.
It sounds like he's flirting with you if he's "playfully" kissing you, so I think he likes you.