I may be too late with this feedback.

I think the pacing is a bit fast. As someone who searched  part of the title, I was well primed for the bonding and cuteness of your game. But I think in the demo, the creepiness happens before the trust is established, particularly at the start with the text - so when more hints come up that the boyfriend is obsessive and a bit glitchy, it feels expected. I think if your boyfriend character spends a bit more time at the start showing interest, remarking on loneliness, and/or 'being a good listener' the pay off experience is more disturbing- because the player would have voluntarily given Boyfriendexe more information.

Your game is promising. Please complete it.