Hilary Duff and Matthew Koma

The ‘How I Met Your Father’ star, 36, and the 37-year-old musician first met in 2015 when they worked on Duff's album 'Breathe In. Breathe Out.' together. They first went official as a couple in early 2017, before splitting in March the same year.

But they reconciled a few months later after realising they couldn't be apart and married in 2019.

Speaking to PEOPLE in 2021, Hilary said: "We knew we just had to be together."

The couple now have four children together.