We wanted it to be mainly how you self interpret it.
SPOILER of our idea of the story:
Our base idea where we decided to start building it from was that you see this from a view of a friend who so to say has an obsession with this person who's apartment you are in. (which is pretty much why you start digging the persons belongings to get into places) Pretty much a one way love where the other one is a bit twisted.
There where originally suppose to be stronger hints to the story by messages being a lot stronger. Hopefully I was able to explain that well enough..
//Might remove this part later to not show spoilers.
Thank you for playing though! :)