Fall... in Love(2005)

Several residents of a Taipei apartment complex try to sort out their tangled romances in this Taiwanese drama helmed by Ming-Tai Wang. Hair stylist Angel can't get her aloof beau, Alan, to commit to their relationship -- a problem that escalates when Alan's first love moves in next door. Meanwhile, he's also having a fling with a middle-aged Mafia mistress who lives in the building.