That giggling girl can't get enough of Roberto. She impresses me with how much she's on top of her game and asks the guys (and Chris Harrison) all the right questions, but with this Roberto fella she just giggles and goes moony-eyed. AND she's genuinely nervous about meeting his family.
I think he's genuine, too. I like the two of them together.
Either that, or I'm just afraid of the moment she meets Taxidermy Dad.