Thank you for your replies!
We used to kiss our son on the lips when he was a little kid. Some time between...5-7 years old (?) it changed to a peck on the cheek. I don't remember how it happened (I would have thought for sure I would remember it.) it just did.
(Our cultural thing, no matter what age, our kids always wait for our blessing. Going to off to school, work, out of the house ... if we don't say it right away they will wait for our, "God bless you." I always await my elders "Dios te bendiga"
It's a nice, comforting custom for us.
)
Have a great week!