Let the potion wear off so that Yunho will love you for the real you, Jaejoong!
I think that the time Yunho no longer under the influence of potion is the time for Jaejoong to start making a move. (Or he doesn't have to because Yunho knows what has been going on for the past two weeks and throwing his rage — or else? to Jaejoong.
I just hope that he will find a way to be happy again, with Jung Yunho in it of course.