I think it's about a guy who falls in love with someone else and that someone else (let's say, a girl) says that does not feel the same way, and yet, her actions speak other way. Despite saying that she doesn't love him, that he is no stranger to her, once she treats him with "love and affection". It's about him making her see that she actually likes him back, because those actions are not the ones someone do when you don't love someone else, and he's searching, investigating, catching clues, with a "sense of emergency" leaving "no stone unturned" so that he can prove to her that she's lying to herself.
I think it's about a guy who falls in love with someone else and that someone else (let's say, a girl) says that does not feel the same way, and yet, her actions speak other way. Despite saying that she doesn't love him, that he is no stranger to her, once she treats him with "love and affection". It's about him making her see that she actually likes him back, because those actions are not the ones someone do when you don't love someone else, and he's searching, investigating, catching clues, with a "sense of emergency" leaving "no stone unturned" so that he can prove to her that she's lying to herself.