Oh, what a perfect series. I love how you caught their dynamic, and showed the three sides of the triangle, their various needs and interaction. (The picture of L and S going to the opera felt gorgeous, I wish someone would draw it!.

I'm looking forward to part 2!

One small detail with the French, since you're asking for concrit: "Je pensais que tu avais dit vingt" (or "Je pensais que tu avais dit qu'il y en avait ving", which is grammatically correct but a bit formal and overdevelopped).