As my teenage son sits snuggling his fuzzy cat, he smiles at me and I can't help but mutter, "I love you."
Such a reply:
"I love you MORE. You've been TOLD."
How does one respond to that? "I love you despite your adorably abrasive, potentially competitive, highly unpredictable verbal outbursts of professed mutual adoration."
I actually just said that back to him and he did that divine laugh that makes his hair jiggle.
Ah, the joys. A great read: "Between Mothers and Sons: Women writers talk about having sons and raising men".