Our date ended with passionate kiss and now he stopped replying?

I met this guy over a dating app. Long story short after a week of texting he asked to meet up. He picked me up that Saturday and treated me very nice, opened doors for me, let me walk in front of me, took me to his favorite coffee shop and such. He drive me back after few hours and eagerly asked for a second date, which I agreed. Then he passionately kissing me in his car few times. Later that same day, he video called me to set up time for our second date.

I messaged him on Monday to check in, which he replied in few hours. At this time, our texting frequency dropped significantly to only few messages per day. On Wednesday, he stopped replying to my message.

We suppose to meet up on Saturday that week but I didn't hear anything from him. My last message to him left unseen but he still seen all my stories on ig. I waited for few days to see if he'd reach out, nothing.

Out of confusion and disappointment, I unfollowed and removed him from instagram. Til this date, I never heard from him again and my message still left unseen.

Does he lost interest? What should I do?

Our date ended with passionate kiss and now he stopped replying?
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