How does John Donne portray the concept of platonic love through pantheistic notion of fusion of lover and beloved?

The main theme of the poem is love. "The Good-Morrow" is both an ode to and an investigation of love—as a relation between two people and as a state of being. Both the speaker and his lover were childish and lived vainly, until love awakened them. And so they find that love remakes not just the lovers, but the world itself: they create a world of their own, and in doing so they “possess” the world fully for the first time; “each hath one [world], and is one.”