Synopsis
There's a certain type of ex-girlfriend who helps raise a boy into the kind of man other women end up marrying. She does all the work — teaches him how to be a good partner — and then someone else gets the finished product. Chang Chuansi is a pretty average girl with a boyfriend who is, by any measure, out of her league. She's already done the math. There's roughly an 80% chance she ends up as one of those ex-girlfriends. Most people around her think the same thing. Chang Chuansi thinks so too. She's just lying there like a…
