Guy confessed that he liked me months ago, and now isn't talking at all?

There was a guy I had gotten close with in class 2ish months ago, and when he sat me down one night and told me he had strong feelings for me, I was stunned and just didn't know what to say.

After he rejected being friends, he proceeded to not text me for 2 whole months. I reached out recently saying "hey! how are you doing" just to see if he's okay, but he doesn't text the same anymore. Why is he so cold? Did I mess up (as I feel like I may have)? Has anyone ever given it a go after originally wanting to be just friends?

Guy confessed that he liked me months ago, and now isn't talking at all?
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