Vaishnava Samhita. Shri Vyasadasa Charitam I. Vol II Book VI Chp 2 Shlokas 11 - 12

गोपीवेषं विधायेह सञ्चरन्ति च केचन 

गोपीभावमविज्ञाय वेषेणैव तु किं फलम्  ||

निःस्वार्थप्रेमविश्वासमेव भक्तेष्वपेक्षते 

रसज्ञो भगवान् कृष्णो वेषेण न हि वञ्चते  ||

Some roam about in the disguise of Gopis not possessing any knowledge of the depth of Gopi Prem. Then what is the use of posing like the Gopis? Bhagavan Shri Krishna takes delight only in selfless loving, devotion and unflinching faith. He is never carried away by mere deceptive appearance.