Many men aren’t really sure how to approach a couple that they think maybe in the lifestyle. I’d say the best way is to start with the husband. If you think that a husband is showing off his wife and maybe in the lifestyle. Introduce yourself to him first. It’s the easiest way to break the ice and intern he’ll introduce you to his wife. At that point he may drop a hint when introducing to his wife saying something like, “this is adam he seem pretty cool I thought you’d like to meet him” that in it self normally let’s you know if your on the right track. From there it’s balance between the two don’t overly focus on the wife. (You don’t want to come across to aggresive or thirsty) flirt lightly at first until one of them gives you the green light. I.e. ask to dance if in a bar, etc. Once you’ve made contact you’ll prolly get invited back with them in no time.