“My breath.”

My darling: you're as necessary to me as breathing. Used for partners and children.

Heard in the wild

نفسم، شام چی بخوریم؟

Darling, what shall we have for dinner?

More terms of endearment

جیگرتو بخورم
jigareto bokhoram
“I'll eat your liver!”
You're so adorable I could eat you up. Said to small children and loved ones.
قربونت برم
ghorbunet beram
“May I be sacrificed for you.”
An all-purpose endearment and thank-you; Persian mothers say it a dozen times a day.
فدات شم
fadât sham
“May I become your ransom.”
I'd give anything for you. Also a warm thank-you or a fond way to end a phone call.
دورت بگردم
dowret begardam
“May I circle around you.”
A tender endearment, often used when comforting someone.