Our most difficult position is sex. Māyā has given such a—they call it nice—such propensity, sex, that it will create disturbances. Even though you are rigid, avowed, you are doing nicely, at sometimes, especially at night, it will disturb. It will disturb. Therefore suratau. Kṛṣṇa is the most expert in this conjugal love. Kṛṣṇa... Therefore we have to submit, surrender to Kṛṣṇa. Suratau paṅgoḥ. We are very much feeble and very slow. And so far our sex impulse is concerned, here is especially mentioned, Madana-mohana. Sex impulse is called Cupid, Madana. But if we become staunch devotee of Kṛṣṇa, this material sex impulse will vanish. Because Cupid becomes, I mean to say, attracted.Even Cupid becomes attracted by Kṛṣṇa. We are attracted by Cupid, but Cupid is attracted by Kṛṣṇa. Therefore His name is Madana-mohana. That is the only remedy.
yad-avadhi mama cetaḥ kṛṣṇa-padāravinde
nava-nava-rasa-dhāmany udyataṁ rantum āsīt
tad-avadhi bata nāri-saṅgame smaryamāne
bhavati mukha-vikāraḥ suṣṭhu niṣṭhīvanaṁ ca
If you stick to the lotus feet of Kṛṣṇa, "Kṛṣṇa save me," then this disturbing material thing, sex agitation, will not disturb you. This is the only way. Therefore it is said Madana-mohana. Our spiritual life is hampered very strongly by this sex impulse. But it is material, the sex impulse is material, so we should try to tolerate, (indistinct) kaṇḍūyanena karayor iva duḥkha-duḥkhaṁ kaṇḍūtivan manasijaṁ viṣaheta-dhīraḥ. Just (try) to tolerate little and chant Hare Kṛṣṇa, pray to Kṛṣṇa, "Please save me from these disturbances." And we should materially also control. Control means atyāhāraḥ prayāsaś ca prajalpo niyamāgrahaḥ . Atyāhāraḥ, too much eating, that is also agitating.
(Lecture on Sri Caitanya Caritamrta------1:1:15------by Srila Prabhupada).

Lord Brahmā's being captivated by the charms of his daughter and Lord Śiva's being captivated by the Mohinī form of the Lord are specific instances which instruct us that even great demigods like Brahmā and Lord Śiva, what to speak of the ordinary conditioned soul, are captivated by the beauty of woman. Therefore, everyone is advised that one should not freely mix even with one's daughter or with one's mother or with one's sister, because the senses are so strong that when one becomes infatuated, the senses do not consider the relationship of daughter, mother or sister. It is best, therefore, to practice controlling the senses by performing bhakti-yoga, engaging in the service of Madana-mohana. Lord Kṛṣṇa's name is Madana-mohana, for He can subdue the god Cupid, or lust. Only by engaging in the service of Madana-mohana can one curb the dictates of Madana, Cupid. Otherwise, attempts to control the senses will fail.
(Srimad Bhagavatam------3:31:36------purport).

Instead of being attracted by material beauty, if one is accustomed to be attracted by the beauty of Rādhārāṇī and Kṛṣṇa, then the statement of Bhagavad-gītā, paraṁ dṛṣṭvā nivartate (B.G.2:57), holds true. When one is attracted by the transcendental beauty of Rādhā and Kṛṣṇa, he is no longer attracted by material feminine beauty. That is the special significance of Rādhā-Kṛṣṇa worship. That is testified to by Yāmunācārya. He says, "Since I have become attracted by the beauty of Rādhā and Kṛṣṇa, when there is attraction for a woman or a memory of sex life with a woman, I at once spit on it, and my face turns in disgust." When we are attracted by Madana-mohana and the beauty of Kṛṣṇa and His consorts, then the shackles of conditioned life, namely the beauty of a material woman, cannot attract us.
(Srimad Bhagavatam------3:31:38------purport).

Gauḍīya Vaiṣṇavas perceive the ultimate objective in Vedic hymns composed of eighteen transcendental letters that adore Kṛṣṇa as Madana-mohana, Govinda and Gopījana-vallabha. Madana-mohana is He who charms Cupid, the god of love, Govinda is He who pleases the senses and the cows, and Gopījana-vallabha is the transcendental lover of the gopīs. Kṛṣṇa Himself is called Madana-mohana, Govinda, Gopījana-vallabha and countless other names as He plays in His different pastimes with His devotees.
The three Deities—Madana-mohana, Govinda and Gopījana-vallabha—have very specific qualities. Worship of Madana-mohana is on the platform of reestablishing our forgotten relationship with the Personality of Godhead. In the material world we are presently in utter ignorance of our eternal relationship with the Supreme Lord. Paṅgoḥ refers to one who cannot move independently by his own strength, and manda-mateḥ is one who is less intelligent because he is too absorbed in materialistic activities. It is best for such persons not to aspire for success in fruitive activities or mental speculation but instead simply to surrender to the Supreme Personality of Godhead. The perfection of life is simply to surrender to the Supreme. In the beginning of our spiritual life we must therefore worship Madana-mohana so that He may attract us and nullify our attachment for material sense gratification. This relationship with Madana-mohana is necessary for neophyte devotees. When one wishes to render service to the Lord with strong attachment, one worships Govinda on the platform of transcendental service. Govinda is the reservoir of all pleasures. When by the grace of Kṛṣṇa and the devotees one reaches perfection in devotional service, he can appreciate Kṛṣṇa as Gopījana-vallabha, the pleasure Deity of the damsels of Vraja.
(Sri Caitanya Caritamrta------1:1:19------purport).

Lord Caitanya dispatched the two generals Rūpa Gosvāmī and Sanātana Gosvāmī to Vṛndāvana to preach the bhakti cult. When Rūpa Gosvāmī and Sanātana Gosvāmī went to Vṛndāvana, there was not a single temple, but by their preaching they were gradually able to construct various temples. Sanātana Gosvāmī constructed the Madana-mohana temple, and Rūpa Gosvāmī constructed the Govindajī temple. Similarly, their nephew Jīva Gosvāmī constructed the Rādhā-Dāmodara temple, Śrī Gopāla Bhaṭṭa Gosvāmī constructed the Rādhā-ramaṇa temple, Śrī Lokanātha Gosvāmī constructed the Gokulānanda temple, and Śyāmānanda Gosvāmī constructed the Śyāmasundara temple. In this way, many temples were gradually constructed. For preaching, construction of temples is also necessary. The Gosvāmīs not only engaged in writing books but also constructed temples because both are needed for preaching work. Śrī Caitanya Mahāprabhu wanted the cult of His saṅkīrtana movement to spread all over the world.
(Sri Caitanya Caritamrta------1:7:164------translation and purport).

Śrīla Sanātana Gosvāmī is the ideal spiritual master, for he delivers one the shelter of the lotus feet of Madana-mohana. Even though one may be unable to travel on the field of Vṛndāvana due to forgetfulness of his relationship with the Supreme Personality of Godhead, he can get an adequate opportunity to stay in Vṛndāvana and derive all spiritual benefits by the mercy of Sanātana Gosvāmī. Śrī Govindajī acts exactly like the śikṣā-guru (instructing spiritual master) by teaching Arjuna the Bhagavad-gītā. He is the original preceptor, for He gives us instructions and an opportunity to serve Him. The initiating spiritual master is a personal manifestation of Śrīla Madana-mohana vigraha, whereas the instructing spiritual master is a personal representative of Śrīla Govindadeva vigraha. Both of these Deities are worshiped at Vṛndāvana. Śrīla Gopīnātha is the ultimate attraction in spiritual realization.
(Sri Caitanya Caritamrta------1:1:47------purport).

Sanātana Gosvāmī was also advised to construct temples in Vṛndāvana and to write books on the principles of Vaiṣṇavism, as authorized by Lord Caitanya Himself. Sanātana Gosvāmī executed all these desires of the Lord—he constructed the temple of Madana-mohana at Vṛndāvana, and he wrote books on the principles of devotional service, such as Hari-bhakti-vilāsa. Lord Caitanya further taught Sanātana Gosvāmī how one can live in the material world while being in a complete relationship with Kṛṣṇa, and He also taught him that there is no necessity for dry renunciation. The purport of these instructions is that in the present age there are many persons who accept the renounced order of life but who are not spiritually advanced. Lord Caitanya did not approve of one's accepting sannyāsa without having perfect knowledge of Kṛṣṇa consciousness. Actually it is found that there are many so-called sannyāsīs whose actions are below those of ordinary men but who pass themselves off as being in the renounced order of life. Lord Caitanya Mahāprabhu did not accept such hypocrisy. He taught Sanātana Gosvāmī to write elaborately on the subject of devotional service in his different books.
(Teachings of Lord Caitanya).