premera utkaṇṭhā - the ecstasy of the love; prabhura - of the Lord; nāhi - there is not; kṛṣṇa-saṅga - meeting with Lord Kṛṣṇa; virahe - in separation; bāḍila - increased; prema-jvālāra - of flames of love; taraṅga - waves.

When Advaita Ācārya danced in that way, Lord Caitanya felt ecstatic love for Kṛṣṇa, and because of His separation, the waves and flames of love increased.