Do married people have some right to privacy? If so where is that "line"?

I gave my wife my phone (hers is in ICU) while I ran into the store. I came back and found she went through all message for 2 years finding only writings she didn't like between my sisters and I. There is animosity between them and some complaints on each side real but her reaction to them bothers me. She is my wife but they were part of my life growing up. I care not about their political beliefs or living situations and now tired of all.

Do married people have privacy rights to keep things to themselves?
Are all married people so united there is no implied individuality or indepenent privacy?
Select gender and age to cast your vote:
Do married people have some right to privacy? If so where is that "line"?
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