Sun Zhou’s I Do follows Tang Weiwei (Li Bingbing), a thirty-something business woman who’s given her all to her career, neglecting her love life after being left heartbroken a decade before by her boyfriend Wang Yang (Duan Yihong), a struggling graphic designer she had supported through difficult times. Now she’s finally ready to get in a relationship again, and in comes Yang Nianhua (Sun Honglei), a former publisher gone bankrupt, whose easy-going charm and selfless devotion make him a prime suitor. But things get complicated as Wang Yang suddenly reappears in Weiwei’s life : now a wealthy businessman, he plans to win her back. It’s the tried and true rom-com formula of the woman torn between two opposites: here, the rich old flame or the modest but charming new leaf. The dilemma unfolds in a thuddingly talky way, each of the usual stakes (does wealth matter more than devotion, can we forgive someone who’s broken our heart once, etc…) being discussed at length against the backdrop of fancy restaurants, sleek offices and luxury apartments, while several subplots involving under-developped supporting characters either fall flat or go nowhere. And if I Do remains watchable, it’s because it has in Li Bingbing a lead actress of tremendous class and subtlety, whose chemistry with Sun Honglei (in a full-on charm attack) and Duan Yihong (excellent in a more thankless role) is immaculate. Would that all romantic comedies had such appealing leads. **1/2