David Nicholls said this quote

“ So they were pen pals now, Emma composing long, intense letters crammed with jokes and underlining, forced banter and barely concealed longing; two-thousand-word acts of love on air-mail paper. Letters, like compilation tapes, were really vehicles for unexpressed emotions and she was clearly putting far too much time and energy into them. In return, Dexter sent her postcards with insufficient postage: ‘Amsterdam is MAD’, ‘Barcelona INSANE’, ‘Dublin ROCKS. Sick as DOG this morning.’ As a travel writer, he was no Bruce Chatwin, but still she would slip the postcards in the pocket of a heavy coat on long soulful walks on Ilkley Moor, searching for some hidden meaning in ‘VENICE COMPLETELY FLOODED!!!! ”