Hollywood actor Leonardo DiCaprio has reportedly split from his model girlfriend Bar Refaeli.

The couple, who have endured an on and off relationship, are said to have parted so they can focus on their own careers.

But reports in the British media claim Refaeli was left angered last month when the Titanic star was spotted partying alone at a New York night club.

"They're taking time off for the time being, they've split," a source told People. "It could just end up as a break but for now they're doing their own thing."

However, another US gossip publication claims the couple are still together after they were spotted at a West Hollywood bookstore together.

It is believed DiCaprio and Refaeli, who began dating in 2006, split for the first time last autumn, before reconciling in December.

Refaeli, from Israel, has modelled for the a host of publications, including Sports Illustrated.

Has the boat sunk for Leonardo DiCaprio?