https://booktoki468.com/novel/7003289?stx=%EC%A0%9C1%EA%B3%84%EB%AA%85
Here u go it's korean raw you can use Google translate and read it
My take was they both loved each other just as intensely. I feel like lerusha was just fighting it because 1. he knew alyosha had a whole life in the criminal underworld 2. He knew alyosha was keeping things from him and that made him assume he was guilty. when lerusha leaves him i think its because he feels like he should - not because he wants to. When he starts to go crazy missing him and he finds out that sure, Alyoysha kept a lot from him but it was to protect him he almost kills himself trying to get back to him.
Yes lerusha does love alyosha that's he been said before also he is reluctant due to alyosha hiding some stuff due to maybe him finding lerusha couldn't accept the truth or what he says also lerusha doesn't know anything about alysosha as their relationship strained after the fight incident then again after that alyosha was with yuri as he was his partner in crime also yes alyosha and lerusha are good together for sure also is alyosha and yuri are excellent together as they understand each other and ready to risk their life for each other as lerusha also does not saying but we can't expect everytime main couple to end up everytime right as it's not about change or making it different it's just story makes it like that sometimes we feel that is healthy way that's all

I feel really sad for alyosha as how he sacrifice for lerusha so much that lerusha doesn't even care for alyosha as much as alyosha does for lerusha I think it's first time he shoot maybe I am wrong as he said he never killed anyone so in that basis I am saying this as we know jurji stays beside during absence of lerusha and jurji takes care of alyosha actually on reader's perspective and being optimistic it's better for alyosha to end with jurji as he cares and protects him same for alyosha as he entrust him so much also protects him as during when he said he will do it and no let jurji does it
If there a possibility if they doesn't follow novel fully it's better chance for jurji and alyosha to end together
As sometimes it feel like it's better for main couple to end as that person suffered a lot and this partner sticked together with him till end even though he got nothing in end which is alyosha actually also he doesn't want anything in the end just want lerusha to be safe in sometimes in life we would not have the happy ending we hope for sometimes the second person who comes maybe normal person but is gonna make them happy and safe which is jurji