MacKay previously dated actress Saoirse Ronan. The two met on the set of the 2013 movie How I Live Now.
Like his current relationship, Ronan and MacKay had kept their relationship under the radar.
It was revealed that the two were dating when the movie’s director, Kevin Macdonald, spoke about it.
“What happened during the course of the film, and I’m hoping that I’m not speaking out of turn, is that they fell in love and it was very easy. It was Saoirse’s first proper boyfriend…”
MacKay and Ronan split after roughly three years together.
While the reason for them heading separate ways was never revealed, he had nothing but praise for her when talking to the Evening Standard after their breakup. “Saoirse is so brilliant and is doing amazing things.”
