The pheromones were to blame
Hae-won recalled this memory that they were not familiar with. 'He' was the one who experienced it and 'he' was the one who knew how much he struggled. How much he had to bear.
He kept recalling this painful memory and even if 'he' wasn't the one that experienced it, his body was very familiar with it.
The pain this body experienced at that time, the pain his heart experienced, came back to him like clear water and he cried.
"Sniff!"
Woo-Bin and Baek-Hyun turned to Hae-won surprised. Did he just sniff? They thought he was asleep.
"Hyung?" Baek-Hyun called softly and Hae-won slowly turned. He looked at them with teary eyes.
"Uoh!" He shut his eyes.
Hae-won sat up, hugged his knees and buried his face.
"I'm sorry, I didn't mean to eavesdrop on your conversation." He said, refusing to show his face to them.
"No, we're the ones who are sorry. It seems we woke you up while talking." Baek-Hyun said and he nodded.