*Spoilers* Wow. WOW. Bai Lu is amazing here. Her acting has matured so much, and I love that she isn't afraid to tackle serious shows and expand her versatility. I've watched quite a few of her series - all are great - but this one broke my heart. Top notch. I've only watched one other show of Ren Jialun in one other series but I loved him here in One and Only with Bai Lu. Their characters, the story, the entire main supporting cast (so well developed each one of them), the angst, slow burn, the unattainable and the depth of loyalty, love, honor. At 24 episodes, the series is the right length. In my top four cDrama (the others being Guardian, Till the End of the Moon, The Wind Blows from Longxi, Love is Sweet).
They FINALLY talk in a calm and meaningful way, without YSW trying to be cute and loving to get yet another love thread/spike with intent to kill TTJ. TTJ understands the reason why she had to dupe him, without him reacting in jealousy and rage. Striped of all the duplicity and secrets and misunderstandings, this relationship has a much higher chance of working out than any of their previous pairings as YSW/TTJ and SJ/MY. Even though YSW/LSS tried to keep an emotional distance, this quiet conversation sitting across each other is way more honest and more real than any other talk they've ever had. AWESOME series!