If he had shown any sign of Stockholm Syndrom during the stalker's stay in his apartment I would've understood at least a little bit why he missed him but he didn't.
I had hopes for this one as well but it seems to be just another case of romanticized abuse and I seriously don't understand why almost every twisted BL webtoon has to be like this. They start with a dark storyline just to turn it into a fairly generic romance.
It looks like he's feeling guilty for hurting the stalker rather than missing him though.. And I totally understand you there.. When he just disappeared I felt afraid that he might come back.. I felt anxious about how the MC will take it at the same time..
It's so cliché, dumb and annoying when the abuser just vanishes and for some goddamn reason the victim starts to miss them. You know what's realistic? Anxiety. Fear. Being paranoid of when he'll be back, of why is he giving you false hope of being left alone. It's fucking ridicolous to start missing the exact reason you've been miserable for weeks or months just because they leave. And I had hopes for this one but I'm done with it, right here