"I have spent three years dreaming of nowhere but here," he returns, enjoying the way Watson's laugh feels against him. "At the moment, I feel as if I could spend three years just like this, without moving, except occasionally to turn over so that I might kiss you at my leisure."

Because he has all the time he could want to kiss Watson. Because they have always, and he hopes to never be in the situation again where he'll have to separate them. They are clearly not meant to be separated.