Unpopular opinion?

So I completely binged read this story tonight LOL since the artist’s new work got updated. The story really reeled me in in the beginning but am I the only one who sort of got lost by it in the end? I don’t doubt that translation errors and transferring from novel to webtoon likely cut out parts from the story and details that may have added onto it, but there are a few things I didn’t really like in the end?

SPOILED ALERT BTW

Such as, I really didn’t like MC and the Doctor’s relationship during the ending. I was fine with the doctor imposing himself on the MC and them being completely adorable and trying to find happiness even with everything going on. But I didn’t like the fact that they ended up having sex and the way things developed.
The MC doesn’t seem to really be in love with the doctor. He likely cares about him and feels grateful, maybe with a little bit of romantic feelings attached.he seemed to want to keep his distance from the doctor and not really advance their relationship as he doesn’t plan on getting treatment and trying to recover despite everything. And he is obviously still struggling to get over the cheating bastard, so why would he want to entice the doctor to have sex with him? I also understand him wanting to repay the doctor back in some way with his body due to his lack of self esteem, but I feel like it was even more selfish of him to try and have a sexual relationship with the doctor if the point was him not wanting to have any strings attached. I feel like a better ending would’ve been them just not having that sexual relationship and just trying to be happy and enjoy each other’s company while they still had the time to do so. Or, the MC decides to try and move on from the Ex completely and start receiving treatment in the end. He wouldn’t be over the ex completely, but he wants to try and move on to a new life with the doctor, even if with treatment and everything the MC still ends up dying. I honestly would’ve been pretty annoyed at ukes like the MC, but honestly for the most part I really sympathized with him and wanted the best for him. It’s just near the end I felt like it might’ve been rushed? And he sort of fell out of favor in a way? Like there’s not really much growth and it hurt to see him sort of just get worse and worse. Though I don’t hate him for it or anything. I wished he had a happier ending :(((

Also idk, I also don’t know why the seme even chose to cheat? Would’ve really liked an explanation as to why he even chose to do something so stupid in the first place, especially if he claims to love the uke so much and is obviously having a mental break down after the uke dies. But I guess that’s just cheaters, not all of them have a good reason, they’re just assholes
I really liked that the seme got what he deserves in the end lmfao. Wait for your grave alone bitch