My oldest son is 10, and I still kiss him on the cheek. Unfortunately, cultural forces have conspired upon my son so that he believes he’s too old for such signs of affection. That’s okay. I’ll keep giving him bear hugs and kissing his cheek, and perhaps when he’s much older and has sons of his own, he’ll surprise me with a kiss in return. The worst thing I could do is shame him for his boundaries or attempt to force him to show affection. If affection is not given freely, it isn’t true.