This is...

So horrible.

Story - was interesting at first, then started having a twist that built up into a soddy excuse of an ending.

Characters - no growth. Protagonist was so passive he was boring. He started some growth when he grew balls but then ended up giving in. Antagonist was creepy but still had his happy ending. Could have had his skills and energy channelled into something more productive then he would have had some growth. Side characters suddenly disappeared and were never heard from anymore.

The relationship - was not justifiable. Stalkers get off on getting a reaction from their prey. So I don't understand what kept him interested in the protagonist when he was not getting any response. Just not realistic enough.

Analysis - it seemed like the author had a lot of good plans for this but had to drop it like a hot potato. Too bad it was going great at the start, but really, the middle and end was just so poor. And no, obsessive love can be choking and tiresome. You would not want a lover like that. No one would. Especially not someone twisted as to keep on tormenting you to get you to love them. No matter how good looking. No matter how well they cook and clean. Not especially when they like rape. You'll lose your mind and kill yourself before you even get your freedom.