How do I say You make me sad in french?

Here are a few ways to say "You make me sad" in French, with varying levels of formality and intensity:

Formal:

* Tu me rends triste. (This is the most direct and literal translation.)

* Tu me fais de la peine. (This is a slightly softer and more polite way to say it.)

Informal:

* Tu me rends malheureux/malheureuse. (This is a stronger and more emotional way to say it.)

* Tu me déprimes. (This means "You depress me" and is a more informal and colloquial way to say it.)

* T'es chiant/e. (This is very informal and means "You're annoying" and can be used in a playful way with close friends or family.)

More nuanced:

* Ta tristesse me touche. (This means "Your sadness touches me" and implies that you feel their sadness deeply.)

* Je suis attristé(e) par ton attitude. (This means "I am saddened by your attitude" and is a more specific and formal way to express your feelings.)

The best way to say it will depend on the context and your relationship with the person.