"He's turning on the charm and practically begging her to hook up with him."
There's only one problem for the Pirates of the Caribbean star - Robbie is already taken.
She met her current boyfriend Tom Ackerley in June on the set of her film Suite Francais, for which he was working as an assistant film director.
Robbie has reportedly admired Bloom ever since she was at school, but has so far resisted his advances.
Bloom, meanwhile, has his hands full with his own bizarre love square.
Kerr has been romantically linked to Australian casino mogul James Packer ever since the supermodel split with Bloom and Packer parted ways with wife Erica last year.
At the same time, Bloom and Erica Packer were spotted hanging out together again last week, reportedly heading out to lunch in California.
The pair, who were also snapped on holiday together in Spain last month, have insisted they are just old friends.
- AAP