first of all, while there are common dream themes and meaning behind things, it's best to be interpreted by the dreamer.
it could be interpreted as turn the other cheek, a kiss from an enemy denotes hostility, but a kiss on ones cheek is a sign of friendship or adoration. it probably doesn't mean he likes you or you like him, you dream could be trying to get across there's someone you didn't give a chance to, or you shouldn't be too hasty in an upcoming situation. your subconscious used this guy, but it doesn't mean it is this guy you need to deal with. meditate and think about what you feel it means. are you having a fight with a friend? could be a waning of things to come.