Cozy up to (someone)

Translation of "cozy up to (someone)" into Russian

подлизываться к (кому-то)

She tried to cozy up to the new boss to get a promotion.

Она пыталась подлизаться к новому начальнику, чтобы получить повышение.

To become friendly or affectionate towards someone, often with the intention of gaining their favor or support.