Winters in London are cold. Harry drinks tea to keep warm. Lena doesn't like that. She's much more of a coffee person, really.

"He clenched his fists to bring himself back to earth, shutting off the tap. He stood stationary, wondering if anything he had been thinking for the last five minutes made any sense at all. Every thought was about her; he wanted her more than anyone. He came down to one conclusion: he was truly obsessed with her." Cover credit to @Nargles