A weird lucid dream without wanting it?

[eerroe1]

Hey all! Last night I was dreaming about me and my friends walking around a clichéd Heaven with ancient Greece -like architecture. All of the sudden when I stopped to look around, I suddenly thought to myself that this just simply couldn't be real and it had to be a dream. When this happened, the friend right next to me looked at me confused; I didn't even say my thoughts aloud so I wonder, what made him look so confused? I decided to ignore him and to try flying. Well, the end result was more like a high jump, and I landed right next to my other friend. Gladly I was somehow able to slow down my fall by simply thinking about it, so it didn't become a sudden wake-up. The next thing I remember is waking up to my alarm clock. What could've triggered the dream to transform into a lucid one? All I remember is looking at one of the ancient Greece -like pillars and then realizing that it was a dream. It has been a long long time since I last tried to lucid dream. And why exactly couldn't I fly more than a few feet? And why did my friend become so confused when the dream turned lucid? If it matters, I probably fell asleep around 5-6 am. Thanks in advance EDIT: Although it seems nobody's interested xD