Add in the fact Hunnam doesn’t like germs and filming that movie was going to be a serious issue.
At the very least, one would have to assume that doing Fifty Shades of Grey was going to be some sort major challenge for Charlie Hunnam.
We’d have to assume that doing the scenes for F__ifty Shades were going to amp that awkwardness up to 11.
He doesn’t like doing sex scenes, primarily because he’s in a relationship and he seems very committed to it, and he knows that can get awkward for his girlfriend.