I've done this for as long as i can remember
When I was about 3 I used to masturbate at night while imagining a grown man standing over memail, watching me and telling me what to do while I touched myself. I also used to spit on my hand and imagine it was his mouth. This same man will still tell me what to do and I am now in my 20's.
I will also imagine that I am being raped/ forced to do certain sexual acts/ watch porn I'm not really into because he told me to. I will also imagine my girlfriend being raped or forcing myself on her while I climax. I also masturbate about 2 times a day and ask for sex everyday. I'm just wondering if any of this is normal or if I should seek help.