After almost 20 years of marriage, it's over: Australian actress Toni Collette has confirmed her separation from musician David Galafassi.

As Collette announced on Instagram on Wednesday, the couple have been going their separate ways for "some time".

Shortly before the 50-year-old's post, the "Daily Mail" published photos showing Galafassi holding hands with a blonde on the beach in Sydney.

Collette, known for roles in Little Miss Sunshine, Knives Out and The World of Tara, met the drummer of pop-rock band Gelbison in 2002.

As the Golden Globe winner said, she immediately fell in love with Galafassi, who was six years her junior.

The wedding followed a year later.

In early 2008, Collette gave birth to their first child, Sage Florence, and their son Arlo Robert was born three years later.