soohyun has no official relationship with daon. he liked him one-sidedly since they were in college, but since he knew daon only have eyes for jaemin, he didn't dare to make a move because he knows daon would turn him down lol. maybe you mistaken him for sunghyeon? LOL. soohyun is the rich kid who comes back from US
dude are you for real or are you kidding me??? there's plenty of people sleeping around for other reasons from love. daon is kinda getting blackmailed by soohyun, that's why he had to agree to getting tied into whatever relationship he has with soohyun omg. but they weren't having a relationship as dating. he was being manipulated. what possessive lover you're talking about?
daon used to be scared if soohyun told his feelings to jaemin, that's why he slept with soohyun as the compensation for him to kept it secret from jaemin. soohyun basically using daon's position to get what he wants, but in the end did it work? no, because daon would never see him like jaemin. jaemin on the other hand, used to have this 'contract' relationship with soohyun because both of this pricks know about daon's true feelings. then daon broke off his 'relationship' with soohyun because he decided to confessed to jaemin. he has no other secret that has to be kept, and confessing is the only way to stop their toxic relationship
I am sorry if something I said upset you. I am just saying that.. How should I put it... Basically I saw the raw and started to ship daon and soohyun. Don't take me wrong I really love sunghyeon out of all of them and he is thousands time better for daon and I don't have anything to say if daon ultimately end with sunghyeon. But thing is daon really in a messy situation between soohyun and Jaemin and if sunghyeon try to get in daon messy situation then I think he will be the one who will get hurt the most (which we already seen it) and I thought it better for sunghyeon to keep himself out of this mess.
And if you have to choose between Jaemin and soohyun, who would you choose? For me its soohyun and I know he would not stand anywhere near to sunghyeon but he is lots much better than Jaemin.
And again if my words hurt you then I am sorry for that.

uhhhhh, is it legal to hate soohyun this much? i really wanna throw a punch over the screen╥╥