Like the one above my comment already said. You are heading down a very dangerous road for a thrill that is not worth risking your marriage.
Also you tell since 1y that you need to tell your wife soon, you wanted to do it on vacation but obviously you didn't because you never mentioned it again.
You are full of inconsistencies, I don't even know how "happily married" and "cheating behind husbands back" is brought together. You are either happily married and share a common interest for adventures of your wife, where you two are on board (maybe not fully to keep a certain spark), but in general you are on the same page.
You sir are wanking to the process of a wife cheating and then leaving the marriage, and this is not what I would consider "happily married". You are actively trying to sabotage your marriage
