CC Ādi 17.278

gopikā-bhāvera ei sudṛḍha niścaya
vrajendra-nandana vinā anyatra nā haya
Synonyms: 
gopikā-bhāvera — of the ecstasy of the gopīs; ei — this; sudṛḍha — firm; niścaya — confirmation; vrajendra-nandana — Lord Śrī Kṛṣṇa; vinā — without; anyatra — anyone else; — not; haya — is possible.
Translation: 
It is firmly concluded that the ecstatic mood of the gopīs is possible only before Kṛṣṇa, and no one else.