One must understand Krsna in tattva (truth). One should use his common sense and consider that if simply by chanting Krsna's holy name one is purified, how then can the person Krsna be immoral
Mundane rascals cannot understand that whatever Kṛṣṇa does, being absolute in nature, is all-good. This quality of the Lord is explained in Śrīmad-Bhāgavatam (10.33.29). One may consider certain acts of a supremely powerful person to be immoral by mundane calculations, but this is not actually the case. For example, the sun absorbs water from the surface of the earth, but it does not absorb water only from the sea. It also absorbs water from filthy sewers and ditches containing urine and other impure substances. The sun is not polluted by absorbing such water. Rather, the sun makes the filthy place pure. If a devotee approaches the Supreme Personality of Godhead for an immoral or improper purpose, he nonetheless becomes purified; the Lord does not become infected. In Śrīmad-Bhāgavatam (10.29.15) it is stated that if one approaches the Supreme Lord even out of lust, anger or fear (kāmaṁ krodhaṁ bhayam), he is purified. The gopīs, being young girls, approached Kṛṣṇa because He was a beautiful young boy. From the external point of view, they approached the Lord out of lust, and the Lord danced with them at midnight. From the mundane point of view, these activities may appear immoral because a married or unmarried young girl cannot leave home to mix with a young boy and dance with him. Although this is immoral from the mundane viewpoint, the activities of the gopīs are accepted as the highest form of worship because it was Lord Kṛṣṇa whom they approached with lusty desires in the dead of night.
But these things cannot be understood by nondevotees. One must understand Kṛṣṇa in tattva (truth). One should use his common sense and consider that if simply by chanting Kṛṣṇa's holy name one is purified, how then can the person Kṛṣṇa be immoral? Unfortunately, mundane fools are accepted as educational leaders and are offered exalted posts for teaching irreligious principles to the general populace. This is explained in Śrīmad-Bhāgavatam (7.5.31): andhā yathāndhair upanīyamānāḥ. Blind men are trying to lead other blind men. Due to the immature understanding of such rascals, common men should not discuss Kṛṣṇa's pastimes with the gopīs. A nondevotee should not even discuss His stealing sweet rice for His devotees. It is warned that one should not even think about these things. Although Kṛṣṇa is the purest of the pure, mundane people, thinking of Kṛṣṇa's pastimes that appear immoral, themselves become polluted. Śrī Caitanya Mahāprabhu therefore never publicly discussed Kṛṣṇa's dealings with the gopīs. He used to discuss these dealings only with three confidential friends. He never discussed rāsa-līlā publicly, as the professional reciters do, although they do not understand Kṛṣṇa or the nature of the audience. However, Śrī Caitanya Mahāprabhu encouraged the public chanting of the holy name on a huge scale for as many hours as possible.