“Thinking about this beautiful soul today,” Watts, 49, posted to Instagram this morning.
“Ten years ago he left this world. He was a true original. Heart always on his sleeve, with the most powerful charisma, strength, humour and talent. I will never forget his gentle spirit.”
Watts, who moved to Australia from England when she was a teenager, and the Perth-born Ledger dated for two years until 2004.
She said in 2011: “He was really a very special soul who made a great impact on my life,” Daily Mail reports. “He was a man completely filled with joy.”