He's feeling weird?

I was supposed to go over to the guys house that I've been seeing. But he canceled on me, because he says "hes feeling weird" what does this even mean? I asked him if he is actually feeling weird or if he just doesn't want me over but he said no I'm feeling weird. I don't really know what to think of this. Nothing has changed since we've seen each other last. Has anyone every said this?
He's feeling weird?
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