Doggie..i get that..and to me only stupid people use their everyday phones to do dirtEven if she deletes them there is a log of the texts that I'm sure are accessible to him. For example, I share a verizon plan with my ex. I can go online on my verizon account and check to see who she's called and who she's texted.
It doesn't take a rocket scientist to figure out that your woman is cheating if you check the phone bill and see she has over a thousand texts to the same number.
A smart person would use a burner for his/her cheating escapades..
I think most people dont get the satisfaction of getting away with cheating..somehow they need to get caught to make it worth it