It will be boring using a walkthrough mod my advice is just to concentrate on the choices when they pop up and if you get confused and don't know what to choose just press the back button and make another choice also keep your eyes on the heart icon it will blink red when you make a right choice and grey out when it's a wrong one always remember you're romancing the characters so you need to know their likes and dislikes so to not fall in any wrong choice and I hope my explanation is helpful for to you 😊
I agree, conventional walkthrough mods that show the correct decision right away take all the fun out of it. Passive walkthrough mods wait for you to make a decision first and then give feedback if necessary, that's an improvement already.
Playing the game blind and just keeping an eye on affection point gains works with simple [+1/+0] decisions, but creative devs will often implement more intricate decisions where this trick won't work. Eternum has these too.
Right now I'm working on "Causality" mods, which are the ultimate compromise: They are very similar to passive walkthrough mods, but they are also a lot smarter, which allows for more player agency. They still soothe your fomo, but immersion wise, it feels almost as if you weren't using any guidance at all. I already created such a mod for Once in a Lifetime, try it if all this sounds interesting to you! I'm always looking for feedback.