One, four, three:

One, four, three.

It seemed like an innocuous rhythm, but whenever Chell used her fingers to tap out the pattern, it made Wheatley's whole day brighter. One, four, three - was how Chell said "I love you", and she told him all the time.

She'd tap it on his spine in the late hours of the night when they were curled in bed together. She'd tap it on his forearms when they snuggled on the couch. She would flutter it on his shoulder when she passed him in the kitchen. She drummed it on his hips when they showered together (and occasionally on his bum which always made him blush). She tapped it on his knuckles when they held hands walking down the street. She tapped it on the base of his skull whenever she kissed him.

But the best, the very best was when they would finish making love, and Chell would be snug in his arms, warm and sated - she would tap it directly over Wheatley's heart.

One, four, three. To others it might not seem like much, but to Wheatley those eight touches made his whole world right.