When are men going to understand that being constantly paranoid about a cheating wife is just shows how little self confidence he has.
That and he's controlling.
I've also come to learn that often the person making all the accusations of cheating is likely thinking of cheating themselves or actually is cheating.
Projection.
You should call him on it and see what he says. Turn it around. Tell him you think he's projecting his own issues of his own fidelity onto you and see what he says.