Moderately interesting cultural difference, right here:
My real mom
sent me some of those heart-shaped candies for Valentine's Day (the ones that say I <3 U and CUTIE; you know the ones I mean), enough to share with people here.
My host mom
thought it was weird that I was sharing candy with people, because apparently in France Valentine's day is exclusively pour les amoureux, and if you give candy to someone it Means Something.
I shared the candy anyway, with my best American smile.