Louise strolls into Jonathan's apartment, awkward and exhausted. She's still wearing her white lab coat from work. In fact, she almost never takes it off. It's her good luck charm, her safety blanket that gets her through days of sexually stimulating rats for research and nights hearing Jonathan rant about his failure of a dissertation on Pliny the Elder.
"Why don't you ever lock the door?" she asks. "So it's easier to leave..." he replies. "Leave-leave?" "No, leave the apartment." "When do you leave the apartment?" "I just like to know that I could."