An old co-worker of mine has two boxers. One is very kissy and one isn't.
If you want you could train him to kiss you on command. Put a bit of peanut butter, butter, cream cheese etc, on you cheek and say "kiss" and let him lick it off. You've done some clicker training with him right? You could click and treat as he licks it off.

Neither of my dogs are kissy, and I prefer it that way. Em will give me kisses if I ask for them and she feels like it.