And after arguing about who has the better six-pack, the pair get set to battle it out over who gets the best girl.
"We're not going to hold back. All the boys haven't really done it for the girls so far, so it is free game," said Josh.
"When we do like the same girl, it does get pretty serious. I'm going in and I have my eye on Cassie," he added.
A surprised Luke then said: "I have my eye on Cassie too, to be honest."
"Let the best man win," Josh said as the pair laughed.
Love Island Australia season two continues on Channel Nine, Tuesday, 8.30pm.