Saoirse Ronan wraps up in a navy coat with boyfriend Jack Lowden during romantic dog walk

Jack Lowden and his girlfriend Saoirse Ronan look loved-up while out on a dog walk

Jack Lowden heads out on a dog walk with girlfriend Saoirse Ronan

Saoirse Ronan Goes Back To 1940 To Film Steve McQueen's 'Blitz' in London