Ledger and Williams split

Heath Ledger and Michelle Williams have ended their three-year relationship, according to reports.

Ledger and Williams, who met on the set of 'Brokeback Mountain', have been engaged since 2004 and have a 23-month-old daughter, Matilda.

But friends say their busy schedules mean they are rarely together and People.com is reporting that they've now decided to split.

A source tells the website: "It was rocky for a while. They did what they could to make it work."