Cora and Thomas
Thomas could have played football, if he'd ever had the chance. He was strong and fast, and good at strategy. He probably would have made an excellent Quarterback. But it was something he'd never get a chance to know, because there hadn't been high schools and teams in his world. The Apocalypse wasn't a good place for team sports, apparently.
"I know most of the people from Beacon Hills, but I don't think we've actually met yet."
He wanted to get to know Lydia's friends because he was a part of her life, and those who were important to Lydia were therefore also important to him.