This guy probably only interested in telling us stories about the process of the male lead trying to get the female lead, and he has no interest in telling us how they end up. Just look at Pretty Face and Mx0. Both series ended with their relationship hanging.
I think the author is just saying (in some bad manner) that every story could end anytime, but while the story is already ended, its actually keep on going in each and everyone own imagination. Just like the ending for Angel Densetsu