By the Lake: Liam, Cheyenne, and later Cressida
Liam raised an eyebrow and didn't glance down, but pointed out, "So you've been staring at my crotch?" He used the plain language because he wanted to see how she responded. Cheyenne and him talked about music and she'd chimed in a few times when he was talking about how Brendan pointed out that a lot of Led Zepplin songs were long, like he didn't know that already. But he felt comfortable enough with her to tease her right back.
Then she did that thing girls do when they wanted to draw attention somewhere. Not something that Liam would outright notice but his mind definitely picked up on and his eyes wandered there.
"You dive yet? Because I don't really see much of a difference."