When did your little ones start giving kisses?

I cant remember when my son started doing this, probably around 7 months with the mmm and just comming to your face for a "kiss", now hes 11 months and I'll say Zachary can i have a kiss? and if he doesnt want to i'll say ok, ill just give daddy a kiss, and when he sees us give each other a kiss he throws himself on us and gives us BIG kisses, I love it=]=]=]