Sam Worthington's girlfriend Lara Bingle has sparked fresh speculation the couple has wed in secret by changing her name on social media.

The model has altered her title on to Lara Bingle Worthington, and also added a love poem by E. E. Cummings to her page, fuelling long-running rumours the stars are husband and wife.

Speculation about the status of their relationship has been rife since the beginning of 2014 when they were spotted wearing matching bands on their left hands, while the Avatar actor also called Bingle his "wife" during a brush with police in New York City in February (14).

They have been dating since 2013.