I guess AlwaysJuly's received useful helps via PM. But if people don't mind, I'd appreciate an English to French dialogue translation (those in blue) as well. Thanks.

Teen Guy offers teen girl a favor.
Girl: “Do I have to sleep with you?
Guy: “Do you have to ask?

It's a friendly flirt, not serious. They are very close friends, both in New York. Guy learns French from school, girl from her native French father & from school.