She smiles a fraction of a smile at him, and even her fractions are radiant.

She makes him think in numbers, makes him seek formulas for the things she makes him feel—despite his disdain for complex mathematics. He dislikes them a little less when she is his, because she herself thinks in numbers. And so, she fills his head with calculations and impossible angles.

For instance: if she looks at him and smiles with only her eyes, will the swell in his heart be greater than, less than, or equal to what fills him when her entire face crinkles with pleasure?

And: at what volume does her laughter ring within him so loudly that he laughs too?

To what degree does he want her when she touches his leg, or hand, or shoulder in a quiet moment, and is it more or less than when her fingers brush his as she passes in a crowded room?

When she curls up to read with her shoulders tilted in the opposite direction, is she leaning away from him, or are her hips angled towards him?

Should the distance between their bodies be judged by mere proximity, or does her posture and expression play a part? What about the way he's feeling? If she's standing across a room and he wants her, does that make them inches away? And if she smiles, does the distance fall into the negatives, or does she pass from physical space into a place inside of him, or is it a conglomeration of impossible possibilities: square root of negative infinity?

When they're one, should the pounding of their hearts be averaged or added together to create a single shared pulse, and if the latter, are they cheating death when their hearts rage at over two hundred beats each minute? Does this shorten their lives by minutes at a time, and does their shared breath when she dozes quietly within his arms counter the lost seconds by filling them with new life?

Finally, can the depths of their hearts be measured? If so, in what units? If not, what methods exist to let him tell her what he feels when she kisses him, or must he rely on the words he already knows? Is it possible that words suffice at all?

He does not move in fractions. He pulls her into his arms and kisses her, and his pulse is exactly "Sam."