[tricky]

They're the two hot favourites to win and out of the blue have formed a friendship.
I actually think it's genuine, as they both seem very straight. Also Callum said that he'd asked Gina to keep an eye on Sam if he (Callum) was evicted.
I for one, hope they're the last two, I tend to rate niceness and sincerity over entertainment value (especially when it comes to the winner).
If pushed, I'd like to see Sam win.