My girlfriend doesn't want to reply to my letter?

So I used to write long letters full of love and affection and I use sweet words to tell my girlfriend that she is very beautiful or anything else an boyfriend would tell his girlfriend. So I wrote an long letter and I expected her to reply me an long letter but the fact is that she just didn't even reply and replied saying "Alright" which broke my heart. I mean I took so much time and efforts to write that letter for her and she doesn't even care.

My girlfriend doesn't want to reply to my letter?
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