What does it mean to dream of your crush's girlfriend?

I know that sounds pretty bad, to like someone who is dating someone else. But I would never do anything with him, not while he is with her. Its just hes been my friend for such a long time, and we click well, and I really truly deeply care about him more then a friend. But these past two nights Ive been having dreams about his girlfriend, they werent neccessarily bad, but not good either. In the most recent one, she was asking me why I dont talk to her, why I keep my distance. She told me she knew how I felt, but did not want this to turn into a situation she had with her friend in the past. I told her that I just want to keep the peace, Ive moved to a different city. Im gone, I just want to keep in contact with him, and then the dream became a blur. I fully believe in karma, and do onto others as you would want them to do onto you, so I dont really know what this dream means. The guy I like has been in the dreams, but they are usually taken over by her. Any ideas? Its bugging me, so if anyone knows please let me know!