creeped out

Ok, here's the deal. I took on a customer in cleburne that needed A/C work done. Well it turned into a 12K plus job and all's great. Nancy came over and met my customer and we all hit it off really great. Spent some time talking and such and had a very nice time. During the course of things they invited us over for dinner and wine for the 15th. So yesterday I'm driving to a job talking to John about my up coming dinner with Kevin & Willi and out of the blue he say's to me "they seem like the kind of folks that might be swingers" I penciled that in to the corosponding synaps and dendrytes. Fast forward to home with Nancy. Hey Nanc, John said to me that he thinks Kevin and Willi might be swingers and Nancy then says to me "I was thinking the same thing"......................I'm soooo creeped out at this point I don't know what to do. They are really nice folks and if I'm wrong I don't want to screw up a potentially good friendship. But if they are how will this play out? Will they wait til someone has to pee and make their move? I'm afraid to go pee now. I might let it be known that Nancy has a.........I mean that I have a rash of an embarassing nature and I'm not sure where I got it? What kind of name is Willi for a girl any way? Beside's, I'm not even attracted to Kevin.