Krishna and Balaram are eternally existing in the spiritual world as transcendental cowherd boys. Srila Prabhupad explains, the only difference between Krishna and Balaram in all Their opulence and all Their powers and all of Their beauties, everything is identical. The only difference is Krishna appears with a complexion which is beautifully dark and bluish like the monsoon rain cloud. And Balaramji appears with a complexion like a spring cloud, very soft, pure, white in complexion. And together They enact wonderful wonderful pleasurable leela in that eternal abode beyond material creation called Goloka Vrindavan, the topmost of all of the Vaikuntha or spiritual planets.