What should I say to this guy if he comes around?

He told me he doesn't do long-distance relationships but constantly reaches out to me. I backed off from him, and friend zoned him due to my feelings that were involved. Now, I don't really have feelings for him and have lost interest in him. He seemed kinda sad that I friend zoned him and backed off.. he will be back because now I don't have closure.
What should I say to this guy if he comes around?
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