CC Ādi 5.11

sarva-rūpe āsvādaye kṛṣṇa-sevānanda
sei balarāma — gaura-saṅge nityānanda
Word for word: 
sarva-rūpe — in all these forms; āsvādaye — tastes; kṛṣṇa-sevā-ānanda — the transcendental bliss of serving Kṛṣṇa; sei balarāma — that Lord Balarāma; gaura-saṅge — with Gaurasundara; nityānanda — Lord Nityānanda.
Translation: 
In all the forms He tastes the transcendental bliss of serving Kṛṣṇa. That same Balarāma is Lord Nityānanda, the companion of Lord Gaurasundara.