Why would a guy snap me back quickly talk to me and send a video talking and seems like the convo was flowing then to leave me on open?

All I want to do to talk to guys I’m not trying to force anything but I just don’t get it I feel ugly or something else is wrong with me when they do this I don't know why they leave me on open they snapped back quickly too and I wasn’t trying to be boring I tried to keep the convo going so I don't know what to think
Why would a guy snap me back quickly talk to me and send a video talking and seems like the convo was flowing then to leave me on open?
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