'That first day, unfurling clothes in Cate’s bedroom, there is a moment when we are both naked and I look up to find her standing at the end of the bed, watching me with her red bathers in one hand. She crosses the room in two steps and puts her hand on my belly, bending so her face is at my waist and then, with her fingers spread wide across my abdomen, she looks up, into my face, and I see her eyes are the palest blue and then she grins, ‘Who’d have thought, hey?’ ...'