Please someone answer me

Personally I don't he loved Yoonbum the way Bum loved him. Sangwoo probably loved the thought of being loved again, and he remind him so much of his mom. Sangwoo used Bum and hurt him in numerous ways and Bum never stoped loving him, so he started feeling loved and trusted Bum. I feel thats why it hurt Sangwoo so much when he thought Bum was trying to kill him like his mother once did. Overall, he doesn't love him he just loves the thought of feeling loved, but thats just my opinion.

Well, this has been canonically confirmed by the author so...yes, Sangwoo loved Bum. It's in that Q&A you always mention for the question about Sangwoo being heterosexual but you always forget the most important question she left for last.
It's not clear when he realised, but during season 3 he attempts to differentiate Bum from his mother. He failed and it's realistic considering his trauma but in the end he died calling Bum's name

from what i think he didn’t. he loved the love he was receiving from him which he never received from his mother for example so in the beginning sangwoo put bum as his “mother figure" making him do what she did to feel loved that he never received before. and as for the blaming bum everytime he physiologically abused him convincing he actually killed someone was also related to his mother since she used to blame sangwoo for the same things blaming bum would make him feel like he’s innocent.

is ther a next season? or dis is really the end of killing stalking it hurt i dont want sangwoo died （/TДT)/

Yea I think the same. At least it is not romantic love, is just an illusion and a need to feel cared for, feel someone’s love. Since Bum actually liked him. This is not love in a romantic way since he is damaged, he needs help. And I can also think he has no room for feeling that type of love when u see how he is, struggling...

Sangwoo said his mum’s name during when they had sex on the table, that made me very confused - like does he have a kink for his mom? Did he actually have feelings towards his own mother I can’t believe how twisted this story is. It was a sad ending but I couldn’t have wished for another ending after everything he had done ...

yeh saym tho..but i hope dis killing stalking story needs a happy ending too

I Think he Said mom because the position reminded him from when his mom tried to rappe him. And i dont Think he has a mommy kink but he is mental unstabel and like never in his Right mind.. so i dont Think we should try analizing too much because their both psychotic and as a normal person i dont Think we know what happens in People like thats mind...