what behaviors are you seeing that after reading many many of the other people's series of threads on this site, who for 6-9 months keep posting:
"not my wife, never," "she wouldn't do that" "I have nothing to go by" "She's too busy, she doesnt have time for an affair" "she said she is going to her friends and I believe her" "she told me the problem is me that I will never change" "she doesnt want to work on the marriage all she wants to do is go out and act single" (for starters)
then one day post, She's been having an affair all along. Are you noticing in your wife?
This is pretty common. So many people say "No way, not ever" and then ... it's true. I hope that is not your case, but never doubt it could very much be a possibility.
