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…When Kṛṣṇa and His devotees meet, the meeting is technically called yoga, or linking up with the Lord. Such meetings between Kṛṣṇa and His devotees can be divided into three classes-namely, perfection, satisfaction, and steadiness. When the devotee meets with Kṛṣṇa in great eagerness, that state of meeting is called perfection.
An example of this perfectional stage of meeting Krishna can be found in the words of Srimati Radharani in this very nice verse;
Rādhārāṇī told Her companion, “My dear friend, I was just going to the bank of the Yamunā, and all of a sudden a very nice boy whose complexion is like a dark blue cloud became visible in front of My eyes. He glanced over Me in a way that I cannot describe. But since this has occurred, I am sorry that I can no longer engage My mind in the duties of My household affairs.”
The following is Chapter 39 from the Nectar of Devotion More
The Hare Krishna Movement 