Krishna speaks here with extraordinary tenderness. Whoever sees Me in everything — in rain, in a child's laughter, in a stranger's kindness — and sees everything resting in Me, that person and I are never separated. I do not vanish from them. They do not vanish from Me.
Notice the symmetry. It is not one-sided devotion. It is a mutual bond. The devotee holds on to Krishna, and Krishna holds on to the devotee. Neither lets go. This is not a contract or a bargain. It is the simplest description of what love between the seeker and the Divine looks like.
The previous shloka (6.29) spoke of seeing the Self in all beings — a philosophical vision. Here Krishna makes it personal: see Me. Not an abstract principle. Me. The shift from philosophy to relationship is quiet but unmistakable.