Why would a guy go from texting you every day to phasing out the conversation?

There is this guy who is on my instagram. We had a few mutual friends. He was liking some of my stories for about a year and he’s messaged me a few times. Recently I followed him back and he started liking more of my stories and almost all of the stories I post.

A few days ago he messaged me privately by replying to one of my stories and we were texting back and forth for about three days. I had a virus and he kept checking in with me to see how I was feeling every day. He would view my messages quickly and start replying straight away and ask me lots of questions to keep the conversation going. I replied back to him and he sent me some flirty messages which showed he was attracted to me. He seemed really keen. Then the last three messages I sent him he only replied to one of them and it was a shortish reply considering I’d sent him some quite long messages.

Why do guys go from texting all the time to suddenly nothing? Did I scare him off? Or did the conversation just naturally die down and it was not possible to keep texting back and forth constantly?

Why would a guy go from texting you every day to phasing out the conversation?
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