Husband May Be Bi-ual,Cheating?

I recently discovered that my husband is going to clubs that show movies and also have private rooms with locking doors. One club has a large room that is almost completely unlit and it features a maze that has randomly placed walls with "glory" holes in the walls. From reading reviews of these clubs, I know that people go to these clubs and have with complete strangers, sometimes involving multiple people. But I also know that some people go only to watch other people. I also know that he has been searching personal ads from people seeking men or couples for group . (He knows without question that I wouldn't do this, so I don't know if he has found someone else to go with him.) I also know that he has gone to a house in a nearby town, and spent about 40 minutes there; but we don't know anyone who lives in that area. Obviously, I can do the math and feel certain he is having casual at clubs and possibly at private homes with total strangers. I know with all certainty that he has gone to these places (gps tracking device) and searched these ads on his computer. Has anyone out there experienced something similar? If so, what did you do about it? Does anyone think this is a recoverable situation? (P.S. My husband tried for years to involve me in swinging and we finally had it out last year when I told him there was NO chance I would do that.) Serious answers only, please. I really need to know what to do with this information.