Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 43
तन्मनस्कास्तदालापास्तद्विचेष्टास्तदात्मिका: ।तद्गुणानेव गायन्त्यो नात्मगाराणि सस्मरु: ॥ ४३ ॥
tan-manaskās tad-alāpāstad-viceṣṭās tad-ātmikāḥtad-guṇān eva gāyantyonātmagārāṇi sasmaruḥ
Their minds absorbed in thoughts of Him, they conversed about Him, acted out His pastimes and felt themselves filled with His presence. They completely forgot about their homes as they loudly sang the glories of Kṛṣṇa’s transcendental qualities.
Actually there is no separation from Kṛṣṇa for the pure devotees of the Lord. Although apparently abandoned by Kṛṣṇa, the gopīs were actually tightly connected to Him by the spiritual process of śravaṇaṁ kīrtanaṁ viṣṇoḥ, hearing and chanting the glories of the Lord.