This is a verse from Śrīla Rūpa Gosvāmī’s Lalita-mādhava (8.34).
Upon seeing His own reflection in a bejeweled pillar of His Dvaraka palace, Krsna desired to embrace it, saying, "Alas, I have never seen such a person before. Who is He? Just by seeing Him I have become eager to embrace Him, exactly like Radharani"
Expressions researched:
"Upon seeing His own reflection in a bejeweled pillar of His Dvārakā palace, Kṛṣṇa desired to embrace it, saying, “Alas, I have never seen such a person before. Who is He? Just by seeing Him I have become eager to embrace Him, exactly like Śrīmatī Rādhārāṇī"
Sri Caitanya-caritamrta
CC Madhya-lila
“‘Upon seeing His own reflection in a bejeweled pillar of His Dvārakā palace, Kṛṣṇa desired to embrace it, saying, “Alas, I have never seen such a person before. Who is He? Just by seeing Him I have become eager to embrace Him, exactly like Śrīmatī Rādhārāṇī.”’”.
“‘Upon seeing His own reflection in a bejeweled pillar of His Dvārakā palace, Kṛṣṇa desired to embrace it, saying, “Alas, I have never seen such a person before. Who is He? Just by seeing Him I have become eager to embrace Him, exactly like Śrīmatī Rādhārāṇī.”’”