Actually, the gopīs are eternal associates of Kṛṣṇa. Ānanda-cinmaya-rasa-pratibhāvitābhiḥ (Bs. 5.37). They are expansions of Kṛṣṇa, Kṛṣṇa's pleasure potency expansion. They are meant for Kṛṣṇa's pleasure. They are not ordinary women. But superficially, just to teach us how to love Kṛṣṇa at the risk of anything... Therefore gopīs, when they were attracted by Kṛṣṇa at midnight... Kṛṣṇa was playing flute, and they became attracted and they left home. Some of them were locked up. They gave up their life even. They were so much attracted. Now this kind of behavior, if youngs girls... According to Vedic civilization, they cannot go out from the protection of father, husband or brother. No, they cannot go. Especially at midnight. So this was against Vedic principle. It is openly a kind of prostitution. But because it was done for Kṛṣṇa, Lord Caitanya Mahāprabhu, He recommends, ramyā kācid upāsanā vraja-vadhubhiḥ kalpitā: "There is no more better type of worship than it was conceived by the vraja gopīs. Vraja-vadhu. The most abominable. For a young girl to leave the care of husband, father, and go to another young boy, according to Vedic culture, it is the most abominable. So still, because, it was, the center was Kṛṣṇa, it is accepted as the highest type of worship. That is Kṛṣṇa consciousness. We have to learn how to act only for Kṛṣṇa, how to love only Kṛṣṇa. Then our life is successful.