I'm a lucky guy to have a GF that loves the lifestyle. Here a few tip's for those that are intrigued.
Some of these clubs will allow single males, with restrictions, and they charge them more.
House parties are the best once you make friends.
13th floor requires you to be pre-screened. It's really simple thought just contact them. Otherwise you probably could not even find the place.
there is also Lucky's in Euless. Pretty nice
http://luckysclubhouse.net/
Marble Door - have not been there
http://www.marbledoor.com/
Basic Instinct - Fort Worth - been there a few times just because it's on my side of town. Really not very nice, and can be boring at times. I have met some nice people there
http://www.clubbasicinstinct.com/
sdc.com
sls.com