<human>: Can you provide a brief overview of the text?

First off, she's a really wonderful, supportive, funny, and kind person whom I have known for over five years now, and have had no other problems with except for this. So I would really like to work things out rather than just cut her out of my life - or if I'm overreacting and being too touchy, learn to let it go. 

The incidents aren't a big deal in retrospect but feel like a huge invasion of privacy at the time it happens. For example, she'll naturally reach for my stuff to use/eat and even if she does ask, her hand will already be reaching for it. There was a time I left my phone infront of me and during class she wordlessly reached over to press the home button of my phone to check the time. For me, it was a "???" moment. (She has a cellphone but it was in her bag I think so it was purely due to being lazy) 
Another thing that (really really) bothers me is when she'll read my messages/look at my phone over my shoulder. For example, I'm texting my friend and I laugh because of something the friend texted. Then she'll ask what is it? And  lean over to read whatever it is I'm doing/reading. 

I probably sound so petty, but things like this make me freeze up when it happens. She's not doing this with malice-she's openy and sharey like this with her boyfriend so I think it's habit+being comfortable around me more than anything else. 

I want to talk to her about this- but I'm the youngest in my family of five siblings so I've been told I can get really aggressive/touchy about personal space/stuff. Plus it's these small things that make me feel like I'm being petty..cso I'd like to ask for an objective perspective.
<bot>: A good friend doesn't respect personal boundaries; will use my phone or read over my shoulder and/or eat my stuff without permission. Is this not a big deal or a legit issue to bring up?