How do you say been long time since i talk to in france?

Here are a few ways to say "It's been a long time since I talked to you" in French, depending on the formality of the situation:

Formal:

* Ça fait longtemps que je ne vous ai pas parlé. (It's been a long time since I haven't spoken to you.)

* Il y a longtemps que nous ne nous sommes pas parlé. (It's been a long time since we haven't spoken.)

Informal:

* Ça fait longtemps qu'on ne s'est pas parlé. (It's been a long time since we haven't spoken.)

* On s'est pas parlé depuis longtemps. (We haven't spoken in a long time.)

More colloquial:

* J'ai pas entendu parler de toi depuis longtemps! (I haven't heard from you in a long time!)

* On devrait se parler plus souvent! (We should talk more often!)

Remember to replace "you" with the appropriate pronoun:

* tu (informal, singular)

* vous (formal, singular/plural)

* on (informal, plural)

You can also use a more specific timeframe like:

* Ça fait deux ans que je ne t'ai pas vu. (It's been two years since I saw you.)

* J'ai pas entendu parler de toi depuis l'été dernier. (I haven't heard from you since last summer.)