AL, "I won't talk to you forever" is not idiomatic. You can say "I won't talk/speak to you ever again" or "I will never talk/speak to you again".

Thanks, Olga.

Uh...Why does it have to be the ‘idiomatic’?
Why not just get it as a precedent ?

Anastasia, there are grammar rules for every language, that's why.

I guess all of those rules are the ex precedents.

Well, anyone who wants to sound like an illiterate ignorant alien in an English speaking society can definitely invent their own grammar rules, no problem. For the rest of the world learning a language means following its grammar rules.

Цитирую Uly Marrero:
Idiomatic means that its consistent with what a native would say. For example, given the sentence "Она купила чёрно-белое платье" one could translate it as "She bought a white and black dress." Here the words are correct, the grammar is correct, the syntax is correct, but not idiomatic because a native speaker would always say "black and white" in that order.

Olga,yes,it is.
And I was wondering,who’s behind this american version of English ?

Tatiana, я вообще не понимаю ,идиоматика это тупо правило или Пристрастия.

Анастасия, это всё вместе.

Oльга,спасибо.

Да не за что :)