It starts out with a guy and a girl who are friends and hang out together. But each realizes they have stronger feelings for the other but are afraid to say anything, fearing that the other will not feel the same way. When they finally discuss the situation (the "rabbit hole"- a metaphor for a portal to new realm), they begin to doubt that they can ever live together as a serious couple. They cannot imagine themselves "in a house" or any other place that indicates commitment- they can never be more than friends.
It starts out with a guy and a girl who are friends and hang out together. But each realizes they have stronger feelings for the other but are afraid to say anything, fearing that the other will not feel the same way. When they finally discuss the situation (the "rabbit hole"- a metaphor for a portal to new realm), they begin to doubt that they can ever live together as a serious couple. They cannot imagine themselves "in a house" or any other place that indicates commitment- they can never be more than friends.
That's my interpretation, anyway.