I want sangwoo to do things just to make Bum smile or laugh
I know right???
But in all seriousness I don’t think it’s impossible for this to happen! Sangwoo is selfish but he’s increasingly obsessed with Bum and does have positive associations with him; he also has cultivated this persona of himself as a nice upstanding fun guy who’s very desirable and who people want to be around, so he has it in him to be charismatic and do nice things. While I think much if not all of his public persona is fake and done to throw off suspicion and feed his ego, I think w Bum he could end up utilizing the same behaviors for his own gratification when Bum is happy. I think the scene where he gets Bum crutches and takes him out shopping is Sangwoo experimenting with doing this. It still involves him being cruel (making fun of Bum’s sex toys etc), but hey, he’s still feeling out his relationship and feelings for Bum. In season 2 I wouldn’t rule out seeing Sangwoo do “nice” things w Bum!