Don’t ask a trans person what their “real name” is. I don’t care if you’re just curious, or you don’t mean anything by it.

DON’T DO IT.

That is not their name.

You asking their birth or “real” name implies that their actual name is invalid.

You don’t need to know.

You have no right to know, no matter how close you are to them.

DO. NOT. ASK.