Good Morning America star Robin Roberts is a doting girlfriend to partner Amber Laign, but joked that she would be in trouble after sharing a clip of her sleeping in the garden.MORE: GMA star Robin Roberts marks end of an era with Amber LaignThe morning television host shared the cutest video over the weekend, panning the camera around their garden in Connecticut and zooming in on Amber lying by the pool next to their beloved dog Lukas."I know I'm gonna get in trouble but couldn't resist," Robin