If you love your wife & appreciate her you never would have even close to considered cheating in the first place.
Shouldn't the question be
"How should I tell my wife?"
"Do you think my wife will forgive me?"
"How could I be such a low down human being?"
Let me tell you a little story right quick.
I met my father as a adult he told me about his cheating endeavors he would brag about it a couple times he paid me large amounts of money to drive him places to go cheat he also used to have me drop him off at the strip club every friday for quite some time.
I never wanted to do any of this in the first place & didn't feel right about it because it's disgusting & foul enough to simply lie to someone generally speaking.
Eventually I had a long talk with his wife while he was not present, they are now divorced she filed papers right after our talk.
The fact of the matter is she is a great woman, didn't deserve that & he didn't appreciate her,
Eventually your wife will find out one way or the other whether someone tells her or not it's only a matter of time.
The thing is that most men don't understand is -Women have a sixth sense for this kind of thing & just know.
She will figure it out & I can almost guarantee you she has suspicions of some sort.