Las Vegas, July 4 The on-and-off Shane Warne and Simone Callahan romance saga seems to be back on track.

After taking some initial steps to rekindle their rocky relationship last Christmas, former Australian cricketer Warne and his ex-wife are staying together in Las Vegas.

The retired leg-spinner is in America's gambling capital, representing 888 Poker in the world series.

He has brought his entire family along for company, The Courier Mail reports.

The couple's three children are believed to be staying at one of Las Vegas' best hotels, enjoying the attractions.

The exact status of their relationship is still unclear and they have made no public statement.

It is understood they have been keen to keep the relationship private, while making slow, purposeful steps towards full reconciliation.

Recently, the pair was spotted getting cosy backstage at the Sound relief concert.

Warne raised many eyebrows as he tried getting cosy with his ex-wife, who seemed pretty interested in him.

Callahan was also seen reciprocating the feelings, as she eagerly waited and watched in the wings when Warne helped Chris Martin and his band Cold Play perform a rendition of The Monkeys" hit I"m A Believer'. (ANI)