Freud believed that to dream of rape for a man is associated with a sadistic expression of sexual urges in waking life. For a woman, it is about control and power

You may see the actual physical act of rape or witness rape. This means a lack of control and direction in life. If the rape in your dream is homosexual in nature then this is connected to feeling a loss of control with the actual masculine side of your person

Your dream is very complicated but i thing this is the thing you think more or you afraid more that,s why you have seen such a dream.
Mostly we see the dream we like the most or we afraid more.
so don,t think about it more it only a dream of your my friend.

Same happens to me in my dream last night but i was having sex with an unknow girl and i was shocked that she want from me more and more even tough i can,t bear any more but she want to have more pleasure from me. and she was blackmailing me if i don,t do this she will call the police.