I was going to reply "yeah but it's only a spoiler for the 1st chapter" but then I reread the title and realized what you meant haha
I didn't focus on reading the title before reading the content because all webtoons these days have paragraph-like titles but I just realized she hasn't met the prince yet and he is the one who is the reincarnation of her asshole ex-lover (asshole until proven otherwise because it might turn out that he never abandoned her at all)
RIGHT??~ Oh I read the raws and the ex lover is not an asshole but the thot..... and yeah I noticed the other manga title is spoiling mostly ch 1 but then again this manga here is already spoiling a huge part of the story...Cos of this title I might say its about the romance between the prince and the mc how will she become a saint, how will they know each other that they are actually a reincarnator, are they gonna tell each other the not so mistake of the ex lover etc etc..see? A huge spoiler right?? ╮(￣▽￣)╭
Just a title itself is a huge spoiler to the story ╮(￣▽￣)╭