The Radha-Krishna amour is a love legend of all times. It's indeed hard to miss the many legends and paintings illustrating Krishna's love affairs, of which the Radha-Krishna affair is the most memorable. Krishna's relationship with Radha, his favorite among the 'gopis' (cow-herding maidens), has served as a model for male and female love in a variety of art forms, and since the sixteenth century appears prominently as a motif in North Indian paintings. The allegorical love of Radha has found expression in some great Bengali poetical works of Govinda Das, Chaitanya Mahaprabhu, and Jayadeva the author of Geet Govinda.
Krishna's youthful dalliances with the 'gopis' are interpreted as symbolic of the loving interplay between God and the human soul. Radha's utterly rapturous love for Krishna and their relationship is often interpreted as the quest for union with the divine. This kind of love is of the highest form of devotion in Vaishnavism, and is symbolically represented as the bond between the wife and husband or beloved and lover.
Radha, daughter of Vrishabhanu, was the mistress of Krishna during that period of his life when he lived among the cowherds of Vrindavan. Since childhood they were close to each other - they played, they danced, they fought, they grew up together and wanted to be together forever, but the world pulled them apart. He departed to safeguard the virtues of truth, and she waited for him. He vanquished his enemies, became the king, and came to be worshipped as a lord of the universe. She waited for him. He married Rukmini and Satyabhama, raised a family, fought the great war of Mahabharata being Saarthi of Arjuna, and she still waited. So great was Radha's love for Krishna that even today her name is uttered whenever Krishna is refered to, and Krishna worship is though to be incomplete without the deification of Radha.
One day the two most talked about lovers come together for a final single meeting. Suradasa in his Radha-Krishna lyrics relates the various amorous delights of the union of Radha and Krishna in this ceremonious 'Gandharva' form of their wedding in front of five hundred and sixty million people of Vraj and all the gods and goddesses of heaven. The sage Vyasa refers to this as the 'Rasa'. Age after age, this evergreen love theme has engrossed poets, painters, musicians and all Krishna devotees alike.
Another Aspect:
The character of Radha is figuratively told as that of a lover, so also the love of the cowherd girls (mostly young married women) who under the leadership of Radhika make divine love to Krishna..

In spiritual parlance, the Lord Creator is the only Purusha or Male and all the creatures are considered as Female.. Radha is considered the representative of created world, the Mother Earth... While Rukmini plays the role of an obedient and devoted wife, Radha plays the role of a devoted friend.. She shows to mankind how the Lord can be reached by simple innocent love rather than dry scholarship of scriptures and hard penance in forests… Mother Rukmini shows the path of duty.. She is also won by the Lord against the wishes of her people, in response to her sincere adoration of His glories.. But the story emphasizes the path of love shown by the Gopis – considered the acharyas or teachers of Madhura Bhakthi..

That the love was not mundane love - albeit references to the physical beauty and the joy of sporting - is said to be clear from the fact that the Gopis (cowherd girls) sing in their pain of separation from Krishna (Gopika geetham), "put your holy feet on our bosoms and remove the lust...", for they actually want Hm for His divine attraction (call it love) but His physical beauty infatuates them and they are worried that the mix up of base emotion would have weaned them away from the Lord..

The story of Bhagavatham in which Krishana Leela occurs is told by the saint Sukha who was so pure and free from lust (more renounced than his illustrious father Veda Vyas) which shows that the context in which the story is told could not be about worldly tinsels love bodily love but should be understood differently - not just on the face of the words...

OF the different forms of reaching the Lord, the PRema marga (path of love) is said to be one much easier than the hard paths of Rajayoga Gnana marga etc calling for much effort self control and intellectual introspections.. Considering the Lord as the child or lover or friend and developing a bondage is the path of Bhakthi (divine love)...

I will tell you friend that the holy scriptures have to be understood carefully.. When Lord Jesus makes an hunch backed woman to "lift up her crooked back" and makes her shed the abnormality, it was not just a miracle to convince His divinity among the people... there was a message as well to humanity... He was calling on the sick (hunchbacked)humanity that was bent toward the earth - focussed on material pleasures - to look up at the infinite firmament (sky) with its beauty and eternity - the higher values of love forgiveness and sacrifice - and get released from the bondage of the uncertain, binding, earthly pleasures... So also every episode in all holy scriptures have to be understood at the subtle level and not just at the gross level message...

It is silly to consider that Lord Krishna who teaches humanity about the various paths of reaching Divine status (in His Gita) was himself a subject of lust and perversity.. In such case the great masters of wisdom and virtues would not have accepted Him as Divine...

Even the famous Krishan Bhaktha, composer and Princess Meera loved Krishna though she was married to a Prince.. She gave up her royal life and lived with Saints composing and singing the glory of the Lord.. Brother they are not human love...

You will find such confusing episodes even in the story of Lord Rama (the Vaali episode) and lives of many divine personages.. They may be deliberately left unexplained in the scriptures so that we may delve deep and get the message.. Even in ancient medicines, the names of the herbs would not be told directly but by code names, for mysterious reasons.. If you contact any wise and virtuous men /women they will tell you a lot about the wealth of tips in the seemingly simple stories...

Radhe Radhe
Hare Krishna..!

Source(s):
Srimad Bhagavatha discourses by pandit Dongre available in many languages,
Holy Science - a spiritual interpretation of Bible by Saint Yuktheswar Giri (Self Realization Fellowship publication),
and many more..