I actually don't think either of them have genuine feelings for each other. Pete might have Tourettes but he's not stupid. Ever since he revealed that the only reason he came on BB was to make his mother some money, it's quite transparent that he is doing everything he can to garner public/ housemate support in actually a very cynical way. To be fair, he hasnt' even got a personality because he's too keen to be everyone's friend. No one on the program is genuine because by now they all know the way it works, and they all have cynical motives. I thought that Pete was tryin to get more understandin for Tourette's sufferers - but no, he's just tryin to win lots of money! and fame! and money!
They deserve each other - couple of freaks.