It's exactly why it's fun to play a game where you have choices to make, you don't know beforehand what the outcome will be. Where is the point of knowing what to do from the beginning? If you plan to play this way use the walkthrough mode of read the pdf one. The dev is telling his story and let's us choose what we want to do with it with some surprises regarding the outcome of our choices. Sometimes, in a game, you fail and you have to retry.But if you were intending to piss players off, this is a good way to go about it. There is really no indication of that your choice of letter sending order in this scene will influence a later "love interest"
It's the fun of this game and Zorlun always answers kindly to any question asked (though I don't know how he can be so patient, I wouldn't be probably after 138 pages of such comments). So why complaining about the lack of indications when you have all the tools at your disposal (walkthrough) to create the story you want on your own? Sure the easiest way is to put everything on the dev because you didn't make the choice you would have liked but come on dude it's just a game and it's free, have fun and relax!