French rule on dating
And sleeping together on the first night doesn’t necessarily mean the relationship is doomed.
NOTE: As other answers have noted dating apps are changing all this a bit — especially as you get out of school, and especially in Paris.
When you become a couple, you get to know one another on romantic walks or visiting museums, rather than a quiet dinner together.
It's not unusual for men to say, "I love you" within a week or two; however most French women don't want a foreigner to say those words if they don't mean them, according to The Local France website.
The French think nothing of asking you out at the last minute, usually by texting.
When a Frenchman does give advance notice, you can plan on him arriving late.
This means the French will spend more time exclusively getting to know one person, instead of constantly comparing him or her to other options.