I think this song is about a long term relationship gone bad. The house metaphor is, of course, the beginning of the relationship. She made him feel safe and he loved more than all the women before.
Then she probably cheated on him (the unanswered questions, the smoke and mirrors) and now he is thinking about how close he has come to seriously commiting himself to that person and about how far away he is from ever feeling that way about someone again.
I think this song is about a long term relationship gone bad. The house metaphor is, of course, the beginning of the relationship. She made him feel safe and he loved more than all the women before.
Then she probably cheated on him (the unanswered questions, the smoke and mirrors) and now he is thinking about how close he has come to seriously commiting himself to that person and about how far away he is from ever feeling that way about someone again.