How could I continue after a guy deleted his message?

I met a guy at a ball yesterday, and we exchanged our Instagram later. It was a great talk. After the ball, I firstly sent him a message saying he was charming and nice to meet him. He replied me like 5 hours later, saying “it was great to meet you too. You looked amazing:) it’s the shame that the night ends so early.”
I saw the notification this morning, but I forgot to read it on Instagram. After around 8 hours, he deleted his message 😭. What can I do now? I don’t mean to ignore him 😭
How could I continue after a guy deleted his message?
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