Is AUTHOR wrong in the post ? POST : So this happened about a year ago, but I'm still not sure who is in the wrong. 

For reference, I had been with my then girlfriend for around 6 months at this point. 

I am a big proponent of self-reflection and I journal quite a lot. I write down whatever I am feeling at that moment, and therefore consider my journal and its contents to be very private. I find that it helps me make big decisions or simply clarify my feelings about certain situations. My girlfriend was well aware of how private I consider this journal to be. 

Anyways, I was telling my then girlfriend about how helpful I find journaling to be, and in the process I showed her what kind I had and therefore which drawer I kept it in. 

At this point in time, we were approaching the last term of our senior year in college, and my thoughts about our long term plans were well written about. I wrote about how I wasn't confident that we would remain together due to the fact that we had already committed to living in other cities, but that my decision had not been made. I also wrote about a long time crush that I had recently seen. I never cheated, and never had the intention of cheating, but I wrote that I wondered what it would be like to date this girl. It was going through my head in that very moment, which is why I wrote it down. Not because I had the intention of following through with it. 

The next morning I went to class while I let her sleep in for the rest of the morning in my bedroom. She confronted me later in the day admitting that she read my journal, and knew how I felt about continuing our relationship and about the "other girl that I loved". She broke up with me for it later that day. 

In no way do I consider those to be my final decisions, just how I felt at the time of writing. She never asked me face to face about the continuation of our relationship. To me, it seems like she read my journal to find something she wouldn't like, and that anything she read shouldn't be considered, as those were my thoughts at the time but not my final decision. 

To this day, I still don't know if I'm in the wrong for writing all that, or if she's in the wrong for reading it in the first place. 

So Reddit, AITA?

tl,dr - my girlfriend read my private journal and broke up with me for what I wrote about the future of our relationship. 