way. The couple I’d seen running for the train almost fell into our carriage, panting, the man laughing while his female companion looked pissed off. They were carrying overnight bags, which they hefted into the baggage rack before taking the seats across the aisle from Laura and me. I smiled at them, then averted my eyes. Although we had befriended a number of couples on our trip around Europe in a transient way, exchanging email addresses and Twitter usernames, I preferred to observe someone first, make sure they weren’t crazy before engaging in conversation.