The girls find another surfing locale and grouse about the guys. Kristin pretty much proves Brody's theory by saying she'll keep hanging out with Will if he keeps being a jerk to her.
That night, Will joins everyone for dinner. BS thanks him for coming, cueing Kristin to pointedly announce, "He's with me." She fishes for compliments and relishes in looking at Brody after Will gives them to her. Down the table, Audrina tells JB he acted awkwardly the night before. He explains that he's been keeping his distance on account of the Hedgehog Situation. She insists she doesn't have any baggage and that they're friends now, so she should be cool. Interesting what a wildly different story she tells him versus her friends. Of course JB comes out with one of his classic vagaries: "Whatever it is, it is. Whatever will be, will be..."
A bit later, Brody pretends he's looking after Kristin when he's really just marking his territory. Kristin makes a toast to their last night in Costa Rica and how well they've all gotten along. Uh huh... Brody dickishly adds in, "And to all my sisters I've had sex with." Kristin acts offended that he might insult her vaginal integrity, then hypocritically grabs Will by the hand and takes him down to the beach to bang.
The next day, the girls point out how Hayek-esque ShePratt is about nature as they tease her with all manner of spiders, leaves, et al. Kristin brags about how sweet Will has been to her and ever-so-kindly points it out that nobody else has gotten any. BS, who has experience with hotel rooms that reek of Kristin's afterglow, is unsurprised.