What does it mean when a guy says he is speechless?

So long story short.

I finally told my crush that I like him in a huge horrible written paragraph because I was nervous. He reply was that he was speechless and that it was brave of me. Then after that it was like if he have never happened... He was just like How are you doing on a random day.

This was on fb because the guy is in the military.

P.S. I am scared of living this on this webpage, so hopefully I can delete this after I get some answers on telling me that I have basically gotten rejected because I am pretty sure I did.:(
What does it mean when a guy says he is speechless?
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