if you don't want to get stressed from reading the side story, end it at chapter 90, that's the ending anyways. the prince time travels so that he could be the one to marry FL because the author wanted to do fan service for the "2nd ML" even though the story had obviously built up a romantic chemistry with the True ML, and barely any with the "2nd ML"
your admirable crush dont like you no more twink! give it up cause her pussy's been devoured