I had a weird reoccurring dream for 3 consecutive nights last week. I was wondering if someone could help me figure out what its about.

On the first night I had a dream that I ran into one of my ex's. We sit down and have a chat. It's nothing serious, we just catch up, talk about our lives etc.

The next night she shows up in my dream again, but this time things are more romantic.

The third night she shows up again, but this time things are extremely sexual.

I don't understand why she showed up all of a sudden (its been about 5 or 6 years since I spoke to her regularly, and havent had any contact with her in about 4 years). I also dont understand why the dreams got progressively more sexual. If anyone has any ideas, I'd love to hear them.