Why is he screenshotting them?

There's this guy that I know, I met him last year in school. We went our separate ways when school ended, but we still talk. Recently, he has been taking screenshots of our chats on snap. I will post something to my story, and he screenshots it, whether it has to do with him or not. Often times, I will just be saying happy birthday to my friend, and he will respond to it, even though it does not involve him. Another thing that I wonder about is why he doesn't care that I spell his name wrong. Whenever I text him, I often times do not use all the right letters, but he never points that out, plus, he responds to all my texts immediately and has never left me on read. My friend says he likes me, but I asked him if he has ever had a crush and he said he's never had a crush in his entire life, but that he is straight. I think he is lying about not ever having a crush, but I'm still very confused. If the guys wouldn't mind helping me out here, (or the girls) that would be great! Thank you!!!

Why is he screenshotting them?
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