During my brother in law's recent visit, he asked if my son would like a valentine from him.
My son is a young adult, soon to leave the teenaged years behind.
My husband laughed and said, "no, at (son)'s age, he should be getting a valentine from a girl." And that was that. (We were curious and asked if he gave his Mom a valentine, and he said no.)
I don't know if anyone has ever explained Valentine's Day to him. But the way it is merchandised now, I can see where he gets confused.
After all, I play an online game called FarmVille. For the past week, friends have been exchanging valentines with each other. I wonder what my brother in law would think of that.