When the devotee is beside Shree Krishna, they shall be known as Radha-Krishna and other such names. At other times, the devotees may be within God, within his heart etc. At such times they are one with God and so Shree Krishna should be termed as alone in such case, even though God is never alone: ‘Krishna is never alone without Radha and Radha without Krishna. They are always together in My heart, drowned in immense love.’
Krishna is the Lord of Lords; whose consort Radha is ‘Praneshwari’ - the vital spirit. Their devotees resound even today, that both Radha and Krishna continue to wandar in Vrindavana.