Still don't know how Hae Soo got pregnant by So. It should have been Jung's baby to make more sense. At the time that she should have become pregnant she wasn't married or engaged. Hae Soo was even shocked when So started talking about children and after the real proposal, which she denied, she couldn't have become pregnant. In the time before the proposal she already started to have doubts and started to fear/trust him less. It would have made more sense if the child was made oud of wedlock between Haeso and Jung because they actually got married. So could have wanted the child because he knew it was HaeSo's child. He loved Haeso so much that he would even take her child if he wasn't the father, as long as he could have a (living) part of her to remember her. And how can she be in a coma for 1 year while she lived in the past for 6 or more years?