Why won't he reply to my message?

So I asked my crush to join me and my friend to see a movie. I was very nervous about asking him so I asked him on facebook. He replied and said that it could be nice, when we were planning to go etc. We had a little convo and that was it. Yesterday I found out that the movie got delayed until 2017 :((( so I send him again, telling that we were looking at some other movies. I attached a pic of the choices and asked him what movie he'd prefer.

He read my message but never replied? Why could that be? :( i did ask a question and he was nice before? Isn't that odd? Now I'm nervous to see him again in class on Monday
Why won't he reply to my message?
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