They built him up as this principled, high morals guy and then he pretty casually cheats on his wife. If they wanted to create personal drama for him to deal with they could have done better than an affair.
Somewhat true, especially in regard to not wanting to sweep deaths under the rug, but one could still have high morals and have an issue with sex/addiction, etc and have no way of knowing if he was doing that in the past.
The show has grown on me, I like it. The goober from FL from Gish's past I could do without. She does swing a wide leg on the show.