(someone) through rose-colored glasses

Translations
(кто-то) через розовые очки
She tends to view him through rose-colored glasses, ignoring his faults.
Она склонна смотреть на него через розовые очки, игнорируя его недостатки.
Definitions
To view someone in an overly optimistic, idealized, or positive way, often ignoring their faults or negative qualities.