By the time Alex and Chun-Hei arrived at the luxurious property which he had purchased for her, Alex was a far more sober man. He had plenty of time to do so at dinner. Though in hindsight, the two of them probably should have grabbed a bite to eat before indulging themselves in karaoke.
Even then, Chun-Hei appeared to be having the time of her life, and thus she was happy to help Alex stumble through her door and up to her bedroom where the two of them immediately began to make out once the door had closed behind them.
Alex's tongue was assaulted by Chun-Hei's before he even had a chance to realize what was happening. Not that he really cared. In fact, he quickly returned the gesture, focusing all his efforts on making sure the woman was properly satisfied with his kiss.