can my Bestfriend be my fuck buddy?

Okay y'all I need some serious advice. My Bestfriend came over today and we were watching movies. We started cuddling, nothing unusual, but I was supposed to go out with a guy so I was getting ready last minute the guy cancels, also not unusual, and I go back to cuddling with my friend. The way we were positioned made it so our noses were touching and we were talking. So then he kissed me and we started making out and grinding for the next hour. We don't want to ruin our friendship so we decided to be "fuck buddies". Is it possible to be fwb and still maintain our friendship?