Unfortunately, being ghosted on a dating site, even when conversation was going so well, is a common occurrence.
Many people conduct multiple conversations on a dating site with multiple people of interest at the same time, making it more likely that you can get ghosted if they deem another conversation to be more worthy of their time.
This is why you need to have a few other conversations going on at the same time with other people of interest on the dating site as well. This way, you aren’t putting all of your eggs in one basket.
Hang in there. As long as you keep putting out the effort, you will find a real match.