Guy friend is being distant?

I have been good friends with a guy since we were 18, we saw each other and talked everyday. We hung out this past week, and became extremely intimate (making out, sex, etc etc.) This isn’t the first time we have became intimate, but this time was different, like way more intimate. Now, he will not talk to me. I text him, he doesn’t respond. This hurts a lot because I felt nothing had changed but clearly something has changed on his part. Did he just want to sleep with me one last time and be done? Is he tired of me?

Guy friend is being distant?
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