You have secretly liked Baek Hyeon for 4 years,today you decided to confess to him.But Baek Hyeon indifferently replied:

"I dont like you."

Actually,he already has you in his heart,but because Baek Hyeon is very poor,he is self-deprecating about his situation.If he agrees,you have to suffer with him,so he coldly rejects you,regardless of the flutter in his heart.