I'll die from it
Je ne pourrai pas vivre sans lui, j'en mourrai.
I won't be able to live without him; I'll die.
— The Umbrellas of Cherbourg (1964)
Je ne pourrai pas, ne pars pas, j'en mourrai.
I can't. Don't leave—I couldn't bear it.
— The Umbrellas of Cherbourg (1964)