It's easier to show. Iris has never had - or needed to have - the vocabulary for this. None of her messages ever needed the passion contained here, for him.

Listen. So she shows him her daydream from home - Charles and Iris together, Charles looking at her from above, fingers and the thrust of a hip to make the bed shake beneath them - and her mind stutter-steps, reaching back to earlier, and Charles and pineapple juice off Iris' hand.