Ooooo u need read Ch.21 and you'll know
Why?????
you make me scared.
SPOILER
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Actually if you read the spoilers below, both of them are kinda weird. Jaemin guy knows about Daon's feelings and he is keeping him around so that he doesnt get together with Soohyun. Basically just keeping him on leash. On other hand, Soohyun is taking advantage of the fact that Daon likes Jaemin and did some abusive stuff with Daon.
jaemin and soohyun would be a perfect match.