In 2016, King had been dating "Hollyoaks" assistant director Paul Slavin. She said of the relationship: "I'm seeing somebody. It's very early days so I don't want to say anything more, but I'm happy." However, in November 2018, she was pictured with a new 'mystery' man and in August 2019, it was reported that they were engaged. In an OK Magazine cover and interview in September 2019, King posed for photos with her new fiancé, IT consultant David Stuckley and announced their engagement.