Time is a woman's enemy. On her 30th birthday, Cheng You Qing received an e-mail from Li Da Ren, her male best friend of 14 years, about the symptoms of premature aging. Unable to bear the fact that, as a man, Li Da Ren is likened to a fine wine that gets better with age and that as a woman, she is likened to a grape that will dry up like a raisin over time, she makes a bet with him to see who will marry first before they turn 35. As she scouts for a potential husband, she finds that despite whoever she meets, there is always one person whom she can be totally at ease with and who is willing to put up with her independent, ill-tempered and stubborn personality - her best friend, Li Da Ren. The only problem is that the both of them had already sworn to each other that they would never fall in love with each other. (Source: MyDramaList)