From Srimad-Bhagavatam we learn that in Vaikuntha the women are much more beautiful in their figure, smiling, dressing, etc., but the men and women there are so much attracted by the chanting of Hare Krsna that they do not get any sex impulse even by intimate mingling. Here also we sometimes get very good example, because when our nice boys and girls are dancing together in chanting Hare Krsna at least for that time they forget all about the sex impulse. This is perfection of life, to be so much attracted to Krsna that all insignificant pleasures are utterly forgotten.
Letter to Uddhava dasa, 18 February, 1969