Ben Shephard has shared a heartfelt message for his friend Julia Bradbury following her diagnosis with breast cancer.MORE: GMB stars' private health battles revealed: Kate Garraway, Lorraine Kelly, Susanna Reid, moreThe Good Morning Britain presenter, 46, took to Instagram with a candid snapshot showing the pair sat outside at a brasserie table and both smiling for the camera.WATCH: Phillip Schofield and Holly Willoughby react to Julia Bradbury’s cancer diagnosisHe wrote: "Spent the morning with