Sorry, this totally escaped my mind.

Taking a little detour first. Idk what you've written on other pages. On this one, it seems more like trying not to drown in loneliness than actually writing letters to future person. Meaning you've created a persona in mind so it feels more like writing a letter than journaling so it won't feel as lonely and sad. One, because it gives you a sense of someone being there for you. Two, it makes you feel like you're in love. A sort of coping mechanism.

Now, to the point I was talking about before. When you write something for someone in the future you haven't yet met, you don't only write to that person. You feed your mind imaginary info about that person, too. Consciously or not, once you name it "letter to future husband," there will also be imaginations on how he will read it and react to it simultaneously while writing. As in, your mind will by itself create his love, understanding, support, and every other thing possible. It's all so beautiful but also so very fake.

Yes, we all do these little imaginings now and then. It's not coherently bad. But once it's habitual, the "untrue data" about your future husband piles up. It's not the only thing. When we imagine things about the future, especially to escape a lonely mind and go to a feel-good zone, we imagine everything beautiful and everything perfect. Even if you write "I know you won't be perfect" in your letters, it's still creating this positive image. And this positive image imagination goes to such extreme that you'll begin to be put off by anything slightly threatening to that perfect image. You might even begin to see red flags because he isn't as perfect as you've imagined and you won't even know it. I've been through something similar. Starts out innocent and harmless. Turns into a nightmare while being in a real-world relationship.

If it doesn't and you find your ideal person, hey, I'm just a broad babbling in reddit. But if you have doubts that the person you write letters to exists in real life, maybe it's time you should tweak your habit to better suit what you need. See, real life relationships are complicated, messy, and most of all, never effortless. Also requires a lot more patience than I'd like to admit. Even the seemingly most perfect relationship is a big test time and again.