How to get over a friends with benefits?

I was friends with benefits with my best guy friend, but he wanted to stop the sex thing and now we’re just friends. Problem is we were f buddies for 7 years, almost from the start of our friendship and I’m kinda attached to the stuff we did. We’re basically turning a new page in our friendship, because we have never been just best friends. I’m crying often because all I think about is it won’t be the same anymore and I don't know how to get over that since we see each other very often.
How to get over a friends with benefits?
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