Martin was married for 10 years to Gwyneth Paltrow before they “consciously uncoupled” in March of 2014. The two have remained close, often spending time with their children, Apple, 13, and Moses, 11, together.
Johnson previously dated model/rocker Matthew Hitt. The two have been on and off for years, but were last seen together in 2016.
The actress next reprises her role as Anastasia Steele in Fifty Shades Freed, which opens Feb. 8, 2018.