I have no idea why my crush was so angry?

So one day, a guy L (we used to talk a lot during class, the teacher always asked us to stop talking in the class) asked me if the homework was to be submitted to me, I said no, submit it to D (the teacher’s assistant), and my crush F immediately woke up from his sleep when he heard my voice then walked up to me and started scolding at me “Why did you mention other’s name?” I replied “I just said submit the homework to the another person”, he kept scolding at me “why did you mention other’s name? Blah blah blah… (accusing me).. Go do some self reflection”. He was angry. But I don’t know what I did wrong. The reason he was angry is just lame, I just said the homework was to be submitted to another person. That makes me feel so upset
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+1 y
Now I’m just mad thinking about it..
I have no idea why my crush was so angry?
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