A certain age—twelve, thirteen years, woman, and fifteen, sixteen years, man—they become very, very much sexually hankering. Therefore the system is that at that time, psychological moment, the young girl and young boy should be married so that unity will endure. It will never break. There will be no more divorce. But when the hankering is exploited, then the whole life is spoiled.
So Rūpa Gosvāmī is giving this example, that "When my hankering will be like the young man, young woman, hankering after one another?" It is very practically given. Yugāyitaṁ nimeṣeṇa cakṣuṣa prāvṛṣāyitam śūnyāyitam jagat sarvam (CC Antya 20.39, Śikṣāṣṭaka 7). When that hankering is there, he sees everything vacant. This is psychological.
So Kṛṣṇa is, can be seen. It is not that Kṛṣṇa cannot be seen. He can be . . . He is present everywhere. Āṇḍāntara-sthaṁ paramāṇu-cayāntara-stham (BS 5.35). He is not only within this universe, but He is within your heart. He is within the atom. Why you cannot see Kṛṣṇa? Because you have no eyes to see Him. That is the difficulty. Premāñjana-cchurita (BS 5.38). That eyes can be prepared by the smearing the ointment of love.
So Prahlāda Mahārāja was chastised by his father so many ways, but he could not forget Kṛṣṇa. The love was fixed up. Therefore Kṛṣṇa became very much pleased, prīto 'ham. Prīto 'ham. Prahlāda bhadram. So mām aprīṇata āyuṣman. Āyuṣman, blessing: "Now you can live long," or "eternally live," āyuṣman. Āyuṣ means duration of life. When one approaches Kṛṣṇa . . . Mām upetya kaunteya duḥkhālayam aśāśvatam, nāpnuvanti (BG 8.15). Duḥkhālayam. So long we have got this material body, material world, it is duḥkhālayam aśāśvatam. It is full of miserable condition, and at the same time not permanent.