Ephesians 5:11 And have no fellowship with the unfruitful works of darkness, but rather reprove them.
5:12 For it is a shame even to speak of those things which are done of them in secret.
To me this says we chose to have fellowship or not with unfruitful works. We shouldn't even speak of them. It isn't surprising that it says not to even speak of them. Cause what we say, hear, etc can settle into our heart. And there would begin the fellowship.