I am dating a guy for some time now. We spent some time this week but now he is ghosting me since 2 days saying he is busy. What does this mean?

We are together for some time now and he is not ready to be in a relationship thinking he won't be able to manage it

I am dating a guy for some time now. We spent some time this week but now he is ghosting me since 2 days saying he is busy. What does this mean?
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