Don't forget that most of us dated (and were engaged to) our current spouses for years before we finally pulled the trigger. And then this other person comes along and, within weeks or months, our spouses decide that this is the one!! The point I am trying to make is that, in a time period as short as this, there is waaaay too much baggage that is yet to be uncovered. There is a lot working against an extramarital relationship.
In my own situation, my wife discovered that her "soulmate" was a habitual flirt, who recycles tired pick-up lines. She dumped him.
It won't be long until your wife discovers what a worm her boyfriend is. Keep doing what you are doing, and put her in a position where she is going to have to work to get you back.
