Was he lying to spare my feelings?

I matched this man I went to high school with. he told me he wanted to get to know me better. A few days after our date he tells me his brother is in the hospital. He cannot date anyone right now because he is concerned. He said his brother might have cancer. I tell him I understand and he says he will know more on Thursday. I message him on Thursday to say I wish his family luck. He blocks me. The next day I see him on dating sites. Do you think he made it all up so he didn’t want to see me again? Why would someone do that?
Was he lying to spare my feelings?
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