Because the ladies of Mathura were seeing Krsna with prema, He appeared ever new and fresh. There were others present in that arena such as the wrestlers, but did they see Him in the same way? They were not pleased upon seeing Him and instead merely became angry. Did Hiranyakasipu enjoy hearing Bhagavan’s name, which is sweeter than sweetness itself? So the ladies of Mathura are saying that the gopis drank the ever fresh, enchanting form of Krsna with their eyes just as one drinks nectar with the mouth. His form is the essence of lavanya, loveliness. It is as if He is the very embodiment of all loveliness.
A lion which is kept in a cage does not appear very beautiful, but when it is set free in the forest, then the entirety of its beauty and power and everything are apparent. Similarly, all of Krsna’s beauty and sweetness are exhibited only ‘in the forest’ of Vraja. He was not as beautiful in the wrestling arena with drops of the elephant’s blood spattered on His face. In this connection Sanatana Gosvami quotes this verse from the Srimad-Bhagavatam (3.2.12):
yan-martya-lilaupayikam sva-yoga
maya-balam darsayata grhitam
vismapanam svasya ca saubhagarddheh
param padam bhusana-bhusanangam
“By His Yogamaya potency, Bhagavan Sri Krsna appeared in this world to lead the conditioned souls back to Him, and He exhibited a form which being seen would enchant them all. That form is the best of all, the ornament of all ornaments, and seeing it is the pinnacle of good fortune.”
Bhakti Rasayana page 97 - 98 [CC-by-ND GVP]