It’s Charlie. “Apparently the buttonholes are in here?” he says. He doesn’t look at any of us properly. Poor bloke. “They’re over there,” Will says. “Chuck Charlie one, will you, Johnno?” I pick one up, little sprig of green stuff and white flowers, and toss it to Charlie, but not quite hard enough to reach him. Charlie makes a sort of lunge for it and doesn’t manage to catch it, fumbles around on the floor. When he’s finally picked it up he leaves as quickly as possible, without saying anything.
I wonder if Charlie heard all their secrets during the stag event, pretended to be drunk, and they all talked about the seaweed thing while he was sober-but-fake-drunk. Maybe Charlie did the seaweed part...but the note to Julia? Has to be Olivia or her mom.