i read this a few days ago but i think i remember you saying you were starting to enjoy these dreams???
Maybe you are kicking yourself for letting her go, and your imagination is running away with you, showing you what you think you could have had and are missing out on. (i think i remember you saying this girl was into devil worship etc) As you want to have sex with her, maybe she has changed your opinion of what good sex may be???
I'm no expert though babe, its just my interpretation

i have my own dream problems as you know lol