I wouldn't say I'm upset per say, but I am. I didn't read the webtoon nor do I plan on it and I do not plan on watching the movie either; all in all, I truly from the bottom of my heart thought this show was wonderful. I wouldn't say the main male actor was a sociopath per say, he just didn't know how to express himself or do things in the correct way, well they were correct, just to him, ya know? The chemistry between the 2 main characters was actually really nice and I highly appreciate the main girl as her, she's actually a pretty good actress for those of you that say she's not. It was a good, nice, realistic story that let you know that, if you're not willing to change how you are or if you're in the process, it's true, you shouldn't drag along the person that you love or loves you. It's like being a drug addict, why take someone on that ride? How it ended did absolutely suck but it was creative in the aspect is that life does move on even though it hurts, ya feel me? Definitely had it's moments, my anxiety was killing me most of the time because I wanted to push through; a lot happened but it was dope. Edit: I rewatched the last episode and honestly I feel for it a little more. The main dude was just manipulative because he knew how to get his way plus he was rich but he fell in love with this caring girl that he thought deserved the world because she didn’t even know she deserved it. She fell in love with him too because for once she was doing for someone she didn’t feel the need to have to do something for but in the end, he had to grow up so I’m bummed they didn’t end up together but also I get it. She didn’t deserve someone immature who was going to hurt her and he really needed to grow in that aspect and that’s okay even though I bawled my eyes out.