A woman coaxes the speaker out of his own caution. She tugs at his fingers and tells him to stand still, stay strong, and let go, and at first he resists, even closing his fist around his skull as if to hold himself in. Then he gives way, and she drags him up through water into blinding sunlight.
The middle of the poem turns dizzy. Flying and falling blur together, gravity "failed to fail / And failed to succeed," and the world spins. In that weightless confusion she kisses him, and he kisses her back, even claiming a little of her "rainbow insanity" for himself.
The speaker moves from fear and restraint to giddy surrender. The mood is playful, breathless, and a little reckless, helped by the repeated tugs that drive the rhythm. By the end, everything else drops away, and the kiss, along with the blue of her eyes, is all that matters. The poem reads as a rush of joy at feeling alive again.