<human>: So, not to go too much into detail, I feel ignored. While many people don't, my girlfriend and I normally reserve our anniversary date each month to do something together. I will frequently give up work and other plans for this. We hang out often but this is a day we reserve typically for when we're just really busy. With her being in high school and working along with me in college and working, it can be difficult.

This time around however, she not only didn't tell me anything, she blatantly planned to go to the movies with a friend, another guy, alone on our anniversary. She told me last minute and was upset at me for being upset about it. I understand having a personal life, and I respect that very much, but I also don't agree with going to the movies with a male friend alone. I wouldn't do that with another girl and I really feel betrayed by it, especially since she told me the day before.

Do I have justification in being upset? I feel betrayed and honestly don't like the idea of her going to the movies alone with another guy, no matter the trust between us. This isn't the first time she's done this. She will often plan things last minute, not ask or talk to me and just go even if it's something we could or should have talked about.

Give me the gist of the text in a nutshell
<bot>: My girlfriend is blowing off "us day" to go to the movies with a male friend alone, am I justified in being upset and what should I do?