This is a recurring theme throughout the scriptures. Krishna says in the Uddhava Gita, Chapter 9 (Uddhava Gita is in the 11th book of the Bhagavata), Swami Madhavananda translator:
Neither Brahma, nor Shiva, nor Balarama, nor Lakshmi, nor My own form is so dear to Me as you. [addressing Uddhava, who Krishna says is the supreme devotee of the Lord]
With a view to purifying Myself by the dust of his feet, I always follow the sage who cares for nothing, is calm, bears enmity to none, and is even-minded.
O Uddhava, neither Yoga, nor knowledge, nor piety, nor study, nor austerity, nor renunciation captivates Me so much as a heightened devotion to Me.
And in the Gita (Swami Nikhilananda translator):
VI. 30. He who sees Me everywhere and sees everything in Me, to him I am never lost, nor is he ever lost to Me.
VI. 31. He who having been established in oneness, worships Me dwelling in all beings--that yogi, in whatever way he leads his life, lives in Me.
VII. 17. ...For supremely dear am I to the man of wisdom, and he is dear to Me.
IX. 29. I am the same to all beings; to Me there is none hateful or dear. But those who worship Me with devotion--they are in Me, and I too am in them.
The Lord cannot resist true Bhakti, true love which asks for nothing in return. He is drawn to true love as iron is drawn to a magnet. Thus, as it says in the Uddhava Gita, he follows a true sage in order to get the dust of his feet.