Cleo Rocos has compared Jack to Clint Eastwood and Cary Grant.

The actress admitted that she was bowled over by the 19-year-old's caring nature and displays of "wisdom" during her time in the house.

"Jack is a young genius - very gentlemanly," Cleo told the Daily Star Sunday. "He speaks like he's in a Clint Eastwood film and has a bit of Cary Grant about him. For a 19-year-old he has a huge wisdom.

"He has dealt with a lot and has taken it with dignity and courage - and he is constantly trying to take care of other people. He is a huge, wise and wonderful young man."