Law and Diaz "hesitant" about romance?

Romance between Jude Law and Cameron Diaz is flourishing - but they are both apparently hesitant to commit after recent splits, says a report.

Sienna Miller dumped Law in November and Diaz split with Justin Timberlake in January.

The pair hit it off on the set of The Holiday last year and have recently hooked up.

Everything is going well, says the News of the World, and Law is flying to the US to spend time with the actress this week.

A source explained: "Jude plans to take her on a series of dinner dates this week and just spend some time hanging out."

"The key to their relationship has always been the fun, so that's what they're hoping for this week.

"Cameron and Jude really bonded while working together but now that friendship has turned into a romance."

But they added: "They are dealing with the breakdown of their old relationships. They both feel quite hesitant about jumping into anything too serious too quickly."