Like any major city, Houston has dozens of regular night clubs. You just have to search for them and then visit some. Houston does also have a few swinger/lifestyle clubs if that is something you want to try.
To which swinger club in Houston are you referring? There are currently at least three on premise lifestyle clubs in Houston of which we are aware. The one we usually visit often has single black men there on most of the nights they allow single men. Not every time, but often. Of course it is easy enough to find many regular clubs that have many black men attending.