ForGump talks of that which we do not speak. I kind-of agree with him because the best chance of getting your wife back would be to let her go - completely.
The problem is, now that you know about the affair, even though she doesn't know that you know, you're just playing a cat-and-mouse game. It's just a tactic that delays the inevitable.
I didn't really follow your last statement, "It's just a tactic that delays the inevitable."
M: 26 W: 26 M: 1.5 T: 3 No kids BD: 31 March 2018
W's affair began: 23 March 2018 Affair confirmed: 18 April 2018 Confrontation/claims she ended A: 14 May 2018 Ended in-house separation: July 2018