Why do guys ghost on girls?

So I initiated a conversation with a guy online, starting with a random question - he replied with something quite witty and funny, I liked his response and thought this guy has a sense of humour (similar to mine). I replied with a witty answer back, but now it's been 3 days and he didn't even continue with the conversation. He was the one that 'liked' my profile first before I decided to connect and talk to him.

Why? What is the main reason for guys to ghost on girls? I thought guys like girls who are chilled, laid back with a sense of humour.
Why do guys ghost on girls?
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