l'ha sempre saputo

has always known it

→ lo
phrase Rare #22,452
has always known it Used when the subject is masculine or feminine singular, or with formal singular “you.” The pronoun l’ means “it” or “that,” while sapere in the passato prossimo can mean “to know” or “to realize.”
IT: Marco l'ha sempre saputo.
EN: Marco has always known it.

E Piumino l'ha sempre saputo.

And Piumino has always known it.

— Paddington 2 (2017)

Lei l'ha sempre saputo che io esisto.

She has always known that I exist.

— Zindagi Na Milegi Dobara (2011)

Una parte di me l'ha sempre saputo.

A part of me has always known it.

— Ratatouille (2007)

E lei l'ha sempre saputo?

And did she always know that?

— Wicked (2024)