What should I do if my guy friend isn't happy about my boundary and is ignoring me?

Since he's emotionally unavailable I said I needed space and he didn't react well. We are friends but flirt a lot. I then reached out asking if we could be friends and cool off the flirting. He is now ignoring me. We've been friends a while and he said he didn't want to lose me. I just feel hurt he won't reply to my message I tried to word it kindly

What should I do if my guy friend isn't happy about my boundary and is ignoring me?
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