avoiding awkwardness

We’ve all done it or will do it at some point during our lives. That friend you’ve been friends with for a while or for a long time. That friend you’ve always fancied. One morning you roll over in bed and find them lying in bed next to you naked as the day they were born. The question is; do you roll back thinking "Oh God! What have I just done?!" Or do you roll back thinking “Damn! That was fun! I’m looking forward to doing it again?”

How do you manage any potential awkwardness after sleeping with a friend? There is no trick, no cheat, no special way...