Keep having dreams of this girl, and of New York City.

Let me start with the girl. We weren't really good friends before this past school year, but this school year we became really good friends, and I knew she considered me one of her best friends. The last time I saw her was June 16, the last day of school. Since then, I've heard nothing about her, nothing from her, nothing on social media at all. I heard that her boyfriend was cheating on her, and that things got ugly, and she's out of that relationship. It's been concerning me, because she was very active on social media before school ended, and now there's nothing. I've had about 6 or 7 dreams about her since then, and I don't know why she's in my dreams so often.

I haven't been to New York City since April 2013, and since then I've come to really miss it. My sister went to college in NYC from 2012-13, and something about the area where she went to college just made me happy. I've had like 4 or 5 dreams about being back in NYC just in the past few weeks, and I don't know why they came on so suddenly. One of the dreams, I was in NYC and I saw the girl mentioned above. We saw each other, hugged, and started walking down the street. We had been talking and laughing and having a great time, and we had probably walked all the way across Manhattan. How come I'm having dreams like these recently?