Christine and Isaac
Isaac didn't know Finnick or Chloe, but they'd invited everyone, and it seemed to be the happening thing tonight. He hadn't had anything (or anyone) else to do tonight, so he'd showed up, kind of lingering in the corner. He didn't really know anyone who wasn't from home (he was too new), and he felt a bit awkward hanging out at some stranger's housewarming party.
When the woman walked by, he forced a smile (something he was really good at, after what he'd lived through).
"Hey," he smiled. "You know them? The couple who lives here, I mean."