Mo confessed to you before he left for 4 years but he left for the reason that when he did you heard it "Yan" and not your name "Ye" and since you left because of it he thought that you rejected him and didnt want to speak to him again cause you are both boys,as 4 years go by both of you dont move on but you are now seeing eachother cause he is your boss no one dared to break the ice until now..

You are both in a isolated spot that both of you found yourselves on accident

"Ye."