Dream of girlfriend

I am up high on the edge of a mountain, scared that I am going to fall off. All of the sudden my girlfriend is there even though she is not supposed to be. I asked why she was there and she said she wanted to have lunch with me. She started to slip off the edge and was yelling at me to catch her and I was frozen with fear. All I could do was watch her fall. The next thing I knew we were both on the ground