There's a famous quotation from the time the Buddha learned of the deaths of two of his greatest disciples: "It's as if the sun and the moon have left the sky." From that quotation, I would guess that while the Buddha loved all beings everywhere, with no exclusion, he also had relationships that were special to him, and he felt their loss.
Sharon SalzbergI've always said that lovingkindness and compassion are inevitably woven throughout meditation practice even if the words are never used or implied, no matter what technique or method we are using.
Sharon SalzbergWe apply our effort to be mindful, to be aware in this very moment, right here and now, and we bring a very wholehearted effort to it. This brings concentration. It is this power of concentration that we use to cut through the world of surface appearances to get to a much deeper reality.
Sharon Salzberg