The publishing house Cherche Midi also published a little volume called Our Friends the French, which was a manual for use by American soldiers in post-war occupied France and was intended to smooth over strained relations by explaining cultural differences. Even now it has a very high sales ranking (569) at Amazon.fr.
Interestingly enough, the original pamphlet, available in its entirety here, had a somewhat less gracious title: "112 Gripes about the French." Gripe number 62 is:
"They kiss right in the open - in the streets."
This always startles Americans - at first.
Kissing on both cheeks is the traditional French greeting between old friends.
For their love-making, the French prefer privacy, if available - just as we do.