Only one question because it will come up, why are you still married when you haven't had physical relations in 7 years?
I'm not saying this to be smart ass, I'm asking as sometimes there is a valid reason and there are other ways that couples compensate for it. It would be a waste of time to go looking for physical infidelity if your wife isn't capable of being intimate.
Our lives are a novel and we, the authors. if you don't like the story line, only you have the power to change it.