Han Geng once thought that if Kim Heechul was a woman, then he would like Kim Heechul
Assuming that you like him, then he will pursue it.
If he pursues her, then they are boyfriend and girlfriend.
Assuming they are boyfriend and girlfriend, then they will be together and live happily.
But, is Kim Heechul a woman? No.
Therefore, when the first condition does not hold, successive assumptions are overturned.