Why didn’t he reply?

So I haven’t seen my crush in about a month, almost 2. He’d usually view all my Instagram stories, he’d hardly miss one until recently since he went back to school (mid August), which is understandable. He’s very busy with work and school. So I finally messaged him a meme on Instagram about a situation we were in before. He replied a few hours later and briefly commented on the meme but then asked me how I was doing. I replied with updating him, asked him how he was doing, and he replied with how he’s really busy with work, school, and his martial arts training. All these replies where within a few hours. I then asked him how many classes he’s taking yesterday morning and he has yet to reply. He viewed my Instagram stories from yesterday though. Why do you think he hasn’t replied? Does he seem interested to you?

Why didn’t he reply?
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