<human>: I have been dating this wonderful girl for a year and a half now. We are complete opposites but it somehow works because we challenge each other to become better people. One hurdle we have not gotten through is privacy. I am very introverted and private while she is extroverted and does not care about privacy. The roots of this come from our family's. 

In my family privacy is very important. My parents always knocked before coming in my room, never searched my room or phone, and never persisted with questions I did not want to answer and the same was expected of me. In my girlfriend's family, there is no privacy. Her mom and siblings always went through her phone and room and its no big deal to them. No one knocks in that household. To me, it's a very big deal. I understand that there is nothing wrong with our opposite upbringings but I still am a big believer in privacy.

If my girlfriend grabs my phone randomly, I get very nervous even though I have nothing to hide. In my mind I have a basic right to privacy and I'm also protecting my friend's privacy. We share everything with each other that is personal but I still cant get passed my issue with privacy. I have gotten a lot better and have opened up to her in more ways than I had ever imagined but when it comes to my phone, room, and computer, it is very personal to me. I absolutely hate when people go through my room or phone. She has also gotten upset when I did not tell her my personal passwords. I dont feel that SO's should have to share their passwords with each other. 

Her argument is that privacy should not matter between us if we are so close. She says I should trust her, which I do, and by being private I am not showing that I trust her. Is she right? I understand that one must be open in relationship, but is there some right to privacy? If so how can I explain it to her nicely because I cannot come up with an argument as to why my privacy is important. If Im in the wrong, please tell me because I honestly don't know who is right.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: I believe that I have a right to my phone, computer, and room privacy while my girlfriend thinks this shows a lack of trust. Who is in the right, and how do I better explain to her my need for privacy?