While they were room mates, Yoochun heard Yunho crying in the middle of the night and was worried that he walked over to see what was going on. He soon found out that Yunho was crying because he saw a ghost and that he was scared. Later on, Yoochun started crying as well because he was even more scared. 

Credit: instagram note

Oh , that's funny XD I think he wanted to comfort Yunho, but then cried because he was more scared xD troll chun XD