James posted the sweet pic alongside the simple emoji caption: '❤️'.
They also headed to Melbourne together last week to celebrate Home and Away's 30th anniversary.
'On screen and off screen we are ... well I am, really enjoying getting to know each other,' James told The Herald Sun.
'And we are very special to each other,' James said.
Sarah added: 'I did not even have to create any chemistry when I was on screen with Jimmy, it was all just there, it was not a job.'
This article originally appeared on New Idea