Vaishnava Samhita. Shri Vyasadasa Charitam II. Vol II Book VI Chp 3 Shloka 1

श्रीसद्गुरुरुवाच 

नृशंसता कठिनता न हि कृष्णे रसात्मके 
माधुर्यरसपूर्णोsयं गोपीनाथः स्वभावतः  ||

Shri Sadguru said

Shri Krishna is the very embodiment of luscious sweetness. There is no tinge of harshness or cruelty in Him. Shri Krishna, the Lord of the Gopis is soft and loving by nature.