My girlfriend and I were at a house party. Were were having a good time, then I went and talked to a friend and she didn't come with me. I go to look for her, I find her in a room with another guy. He is laying down and she was on top of him. I was very angry when I saw this, so I rip my her off him and start to punch him in the face repeatedly until my girlfriend finally gets me off him. When I look at him, he is knocked out and his face is very bloody and his nose is broken. I yell at my girlfriend for being on top of another guy and then wipe my bloody hands onto her shirt. I walk out of the room. I wake up.

My girlfriend and I have just broken up a week ago, but in my dream we were still together

Probably anxiety relating to relationship failure present in your subconscious and manifesting itself in your dreams. It obviously indicates that you still have feeling for her but feel betrayed through her lack of faithfulness to you. Never go back over a trail you have already blazed so to speak. It will take time for your feelings for her to subside and you will probably have some more dreams about her but if it was not meant to be it is not meant to be. There are plenty of fish in the sea so to speak. Give yourself a few months or more and you will be ready to find someone else special for a relationship. Relationships can be very intimate on a physical, emotional and spiritual level. This is another reason why you still feel connection to her through your dreams. What you are experiencing is normal. The good news is the right person is out there somewhere for you so don't despair. Give it time. Time heals all wounds and 'love is the answer' (John Lennon).