Was this wrong to say to my boyfriend?

My boyfriend is in bootcamp, and in one of his letters he asked if I was okay. I lettered him back and told him I was fine (which was a lie) and so I sent another one after telling him how I really felt: basically that I love him so much, but it’s really hard for me, especially, because I don’t know how we are going to grow this relationship when we aren’t going to have much time to see each other, and will be in different states most of the time (if we don’t get married)

We have always been in a LDR which I feel makes it harder... because I feel like I still don’t know him after 9 months... we’ve only hung out for a total of 3 weeks in person.

is it wrong that I told him this in a letter? I feel so bad, but it’s honestly how I’ve been feeling, and I don’t know what to do about it, because it can’t be fixed unless we get married, or he gets stationed in my state (which most likely won’t happen)
Was this wrong to say to my boyfriend?
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