Where to french-kiss in Paris?

“A French kiss, tongue kiss, pash, snog or deep kiss is a romantic or sexual kiss in which one participant's tongue touches the other's tongue (or lips) and usually enters his/her mouth.” Definition from Wikipedia.org.

So let's get to the point, I know you are all waiting for that!
-> On the top of the Eiffel Tower. For those who have been on the 3rd or even the 2nd floor, you know it’s very very windy! So while your hair is coming on your face and your guy will feel he’s kissing Chewbacca.
->In a traditional French café, you know where the “garcon” (waiter) is so nice and helpful. There, the air is so smoky; you would have to hold your breath for few minutes? Would you be able to?
->On December 31st - like everyone does at the end of the year - thousands of people go to the Champs-Elysees to kiss and celebrate this New Year. All the cars are horning and it’s much crowed but if you are shy, that would be a good start to learn how to kiss in public.
->Georges Brassens would probably recommend “to kiss on public bench”, just like in his famous song “Les Amoureux des Bancs Publics”.
->On the top of Notre Dame Cathedral. After walking up the stairs for 343 meters, you will probably feel like drinking water than kissing but who cares? Take a deep breath and do your job! You didn’t risk your life to blow this moment away?! Be careful, a gargoyle might be watching you.