"Who manifests an abundance of sweetness greater than Mine, which has never been experienced before and which causes wonder to all? Alas, I Myself, My mind bewildered upon seeing this beauty, impetuously desire to enjoy it like Śrīmatī Rādhārāṇī."
This text is from the Lalita-mādhava (8.34) of Śrīla Rūpa Gosvāmī. It was spoken by Lord Kṛṣṇa when He saw the beauty of His own reflection in a jeweled fountain in Dvārakā.
(Sri Caitanya Caritamrta-----1:4:146-----translation and purport).

“"My dear auspicious Rādhārāṇī, Your body is the source of all beauty. Your red lips are softer than the sense of immortal sweetness, Your face bears the aroma of a lotus flower, Your sweet words defeat the vibrations of the cuckoo, and Your limbs are cooler than the pulp of sandalwood. All My transcendental senses are overwhelmed in ecstatic pleasure by tasting You, who are completely decorated by beautiful qualities."
This verse, spoken by Lord Kṛṣṇa to Rādhā, is recorded in the Lalita-mādhava (9.9) of Śrīla Rūpa Gosvāmī.
(Sri Caitanya Caritamrta-----1:4:259-----translation and purport).

In the beginning one should very regularly chant Śrī Gaurasundara's holy name and then chant the holy name of Lord Nityānanda. Thus one's heart will be cleansed of impure desires for material enjoyment. Then one can approach Vṛndāvana-dhāma to worship Lord Kṛṣṇa. Unless one is favored by Lord Caitanya and Nityānanda, there is no need to go to Vṛndāvana, for unless one's mind is purified, he cannot see Vṛndāvana, even if he goes there. Actually going to Vṛndāvana involves taking shelter of the six Gosvāmīs by reading the Bhakti-rasāmṛta-sindhu, Vidagdha-mādhava, Lalita-mādhava and the other books that they have given. In this way one can understand the transcendental loving affairs between Rādhā and Kṛṣṇa. Kabe hāma bujhaba se yugala-pirīti. The conjugal love between Rādhā and Kṛṣṇa is not an ordinary human affair; it is fully transcendental. In order to understand Rādhā and Kṛṣṇa, worship Them and engage in Their loving service, one must be guided by Śrī Caitanya Mahāprabhu, Nityānanda Prabhu and the six Gosvāmīs, Lord Caitanya's direct disciples.
(Sri Caitanya Caritamrta-----1:8:31-----purport).

In the Bhakti-ratnākara there is a list of the books Śrī Rūpa Gosvāmī compiled. Of all his books, the following sixteen are very popular among Vaiṣṇavas: (1) Haṁsadūta, (2) Uddhava-sandeśa, (3) Kṛṣṇa-janma-tithi-vidhi, (4 and 5) Rādhā-kṛṣṇa-gaṇoddeśa-dīpikā, Bṛhat (major) and Laghu (minor), (6) Stavamālā, (7) Vidagdha-mādhava, (8) Lalita-mādhava, (9) Dāna-keli-kaumudi, (10) Bhakti-rasāmṛta-sindhu (this is the most celebrated book by Śrī Rūpa Gosvāmī), (11) Ujjvala-nīlamaṇi, (12) Ākhyāta-candrikā, (13) Mathurā-mahimā, (14) Padyāvalī, (15) Nāṭaka-candrikā and (16) Laghu-bhāgavatāmṛta.
(Sri Caitanya Caritamrta-----1:10:84-----purport).

Śrī Caitanya Mahāprabhu used to praise the handwriting of Rūpa Gosvāmī. Śrīla Rūpa Gosvāmī could compose verses according to the desires of Śrī Caitanya Mahāprabhu, and by His direction he wrote two books named Lalita-mādhava and Vidagdha-mādhava.
(Sri Caitanya Caritamrta-----1:10:84-----purport).

"Once Lord Śrī Kṛṣṇa playfully manifested Himself as Nārāyaṇa, with four victorious hands and a very beautiful form. When the gopīs saw this exalted form, however, their ecstatic feelings were crippled. Even a learned scholar, therefore, cannot understand the gopīs' ecstatic feelings, which are firmly fixed upon the original form of Lord Kṛṣṇa as the son of Nanda Mahārāja. The wonderful feelings of the gopīs in ecstatic parama-rasa with Kṛṣṇa constitute the greatest mystery in spiritual life."
This is a quotation from the Lalita-mādhava (6.54), by Śrīla Rūpa Gosvāmī.
(Sri Caitanya Caritamrta-----1:17:281-----translation and purport).

Similarly, the Lalita-mādhava is a description of Kṛṣṇa's pastimes in Dvārakā. These pastimes were made into a drama, and the work was finished in the year 1459 Śakābda. The first part deals with festivities in the evening, the second with the killing of the Śaṅkhacūḍa, the third with maddened Śrīmatī Rādhārāṇī, the fourth with Rādhārāṇī’s proceeding toward Kṛṣṇa, the fifth with the achievement of Candrāvalī, the sixth with the achievement of Lalitā, the seventh with the meeting in Nava-vṛndāvana, the eighth with the enjoyment in Nava-vṛndāvana, the ninth with looking over pictures, and the tenth with complete satisfaction of the mind. Thus the entire drama is divided into ten parts.
(Sri Caitanya Caritamrta-----2:1:41-----purport).

The gopīs continued, "Dear Kṛṣṇa, the fragrance of the mellows of Your pastimes is spread throughout the forests of the glorious land of Vṛndāvana, which is surrounded by the sweetness of the district of Mathurā. In the congenial atmosphere of that wonderful land, You may enjoy Your pastimes, with Your flute dancing on Your lips, and surrounded by us, the gopīs, whose hearts are always enchanted by unpredictable ecstatic emotions."
This is a verse from the Lalita-mādhava (10.38), by Śrīla Rūpa Gosvāmī.
(Sri Caitanya Caritamrta-----2:1:84----translation and -purport).

"Upon seeing His own reflection in a bejeweled pillar of His Dvārakā palace, Kṛṣṇa desired to embrace it, saying, "Alas, I have never seen such a person before. Who is He? Just by seeing Him I have become eager to embrace Him, exactly like Śrīmatī Rādhārāṇī.""”
This is a verse from Śrīla Rūpa Gosvāmī’s Lalita-mādhava (8.34).
(Sri Caitanya Caritamrta-----2:8:149-----translation and purport).

“"Once Lord Śrī Kṛṣṇa playfully manifested Himself as Nārāyaṇa, with four victorious hands and a very beautiful form. When the gopīs saw this exalted form, however, their ecstatic feelings were crippled. A learned scholar, therefore, cannot understand the gopīs" ecstatic feelings, which are firmly fixed upon the original form of Lord Kṛṣṇa as the son of Nanda Mahārāja. The wonderful feelings of the gopīs in ecstatic parama-rasa with Kṛṣṇa constitute the greatest mystery in spiritual life.’”
This is a verse spoken by Nārada Muni in the Lalita-mādhava-nāṭaka (6.14), a drama written by Śrīla Rūpa Gosvāmī.
(Sri Caitanya Caritamrta-----2:9:151-----translation and purport).

The highest achievement attained by the jñānīs, or impersonalists, is becoming one with the Supreme, generally known as mokṣa, liberation. The highest achievements of the yogīs are the eight material perfections, such as aṇimā, laghimā and prāpti. Yet these are nothing compared to the eternal bliss of the devotee who returns back to Godhead and tastes the fruit of devotional service to the lotus feet of the Lord. The material perfections, even up to the point of liberation, are very insignificant in comparison; therefore the pure devotee is never interested in such things. His only interest is in perfecting his devotional service to the Lord. The pleasure of the impersonalist, monist philosophers is condemned in the following verse, which is also found in Śrīla Rūpa Gosvāmī’s Lalita-mādhava.
(Sri Caitanya Caritamrta-----2:19:164-----purport).

"My dear friend, this dramatic actor appears like a second form of My own self. Like a picture, He displays My pastimes as a cowherd boy overflowing with wonderfully attractive sweetness and fragrance, which are so dear to the damsels of Vraja. When I see such a display, My heart becomes greatly excited. I long for such pastimes and desire a form exactly like that of the damsels of Vraja."
This verse is found in the Lalita-mādhava (4.19). It was spoken by Vāsudeva in Dvārakā.
(Sri Caitanya Caritamrta-----2:20:181-----translation and purport).

"Who manifests an abundance of sweetness greater than Mine, which has never been experienced before and which causes wonder to all? Alas, I Myself, My mind bewildered upon seeing this beauty, impetuously desire to enjoy it like Śrīmatī Rādhārāṇī."
This verse spoken by Vāsudeva in Dvārakā is also recorded by Śrīla Rūpa Gosvāmī in his Lalita-mādhava (8.34).
(Sri Caitanya Caritamrta-----2:20:182-----translation and purport).

One day Śrī Caitanya Mahāprabhu, Rāmānanda Rāya, Sārvabhauma Bhaṭṭācārya and others went to the place of Haridāsa Ṭhākura and heard some of the verses Rūpa Gosvāmī had composed for his books Lalita-mādhava and Vidagdha-mādhava. After examining the manuscripts of these two books, Rāmānanda Rāya approved and appreciated them very much.
(Sri Caitanya Caritamrta-----3:1-----summary).

"I shall write two separate invocations of good fortune and two different introductions. Let me think deeply about the matter and then describe two different sets of incidents."
The two works are the Vidagdha-mādhava and the Lalita-mādhava. The Vidagdha-mādhava describes pastimes in Vṛndāvana, and the Lalita-mādhava describes pastimes in Dvārakā and Mathurā.
(Sri Caitanya Caritamrta-----3:1:71-----translation and purport).

"The two plays are called Vidagdha-mādhava and Lalita-mādhava. Both of them wonderfully describe ecstatic emotional love of God."
Śrīla Bhaktisiddhānta Sarasvatī Ṭhākura informs us in this connection that Śrīla Rūpa Gosvāmī finished the drama known as Vidagdha-mādhava in the year Śakābda 1454 (A.D. 1532) and the Lalita-mādhava in Śakābda 1459 (A.D. 1537).
(Sri Caitanya Caritamrta-----3:1:126-----translation and purport).

"O most beautiful friend, please accept the Supreme Personality of Godhead, who is standing before You full of transcendental bliss. The borders of His eyes roam from side to side, and His eyebrows move slowly like bumblebees on His lotuslike face. Standing with His right foot placed below the knee of His left leg, the middle of His body curved in three places, and His neck gracefully tilted to the side, He takes His flute to His pursed lips and moves His fingers upon it here and there."
This verse from the Lalita-mādhava-nāṭaka (4.27), a ten-act play by Śrīla Rūpa Gosvāmī, is spoken by Lalitādevī to Rādhārāṇī.
(Sri Caitanya Caritamrta-----3:1:166-----translation and purport).

"O beautiful-faced one, who is this creative person standing before us? With the sharp chisels of His loving glances, He is splitting the hard stones of many women"s devotion to their husbands. And with the luster of His body, surpassing the brilliance of countless emeralds, He is simultaneously constructing private meeting places for His pastimes.’
This verse (Lalita-mādhava 1.52) is spoken by Rādhārāṇī to Lalitādevī.
(Sri Caitanya Caritamrta-----3:1:167-----translation and purport).

"My dear friend, this newly youthful Lord Śrī Kṛṣṇa, the moon in the family of Nanda Mahārāja, is so beautiful that He defies the beauty of clusters of valuable jewels. All glories to the vibration of His flute, for it is cunningly breaking the patience of chaste ladies by loosening their belts and tight dresses."
This verse from the Lalita-mādhava (1.49) is spoken by Lalitādevī to Rādhārāṇī.
(Sri Caitanya Caritamrta-----3:1:168-----translation and purport).

""The beautiful moonlike glories of Mukunda give distress to the lotuslike faces of the wives of the demons and to their raised breasts, which are like gleaming cakravāka birds. Those glories, however, are pleasing to all His devotees, who are like cakora birds. May those glories forever give pleasure to you all.""
This is the first verse of Act One of the Lalita-mādhava.
(Sri Caitanya Caritamrta-----3:1:175-----translation and purport).