It's clear that Dr. Huang is the one who's been trying to cheat on , but he's not the only one. He's also a close friend of , and he even picked out his favorite wine. So, it's pretty clear that , you guessed it, the guy is trying to steal your love. . He asks if you've seen anyone acting suspicious recently, and you say yes. He tells you to leave it to him to figure it out, because he'll be able to track down the culprit. He suggests that they go to a nearby karaoke bar, where they can have a drink and sing together. He also tells , "you have never heard Dr.shi sing" , which is a reference to the fact that he doesn't really know what's going on between , she and , he. He says he can sing for them at home if he wants, and then they can go to the karaoke bar.