Is talking to a stranger already a way of leading them on?

I was just new to this platform when someone suddenly messaged me. He was kind and very, very appreciative of me---even just minutes after his first message. I could sense the "simping" but I let it go. I talked to him and shared with him some things about me for the sake of returning the "favor" of him sharing to me. At that time, I had plenty of time to reply right away but the next day, I became busy (because you cant expect someone to be in here 24/7, can you?) Anyway, he sounded hurt in his last messages and seemed to imply that I ghosted him. did I do something wrong? Lol.