I dont understand why I am recently having sexual dreams about my son's father. He has always been as hurtful as possible to me and the only times he has been sweet it was an act. He even used to rape me about once a month for 2 years. I have no desire to be with him again and am even very angry with him now for getting another girl pregnant and is going to ruin another child's life. I have an amazing boyfriend now and I genuinely love him more than anyone in my entire life.
So naturally, when I wake up from having a dream where my son's father was sweet to me and flirting with me and we had sex when my boyfriend is also seen in the dream, makes me very upset because I know those feelings would be wrong when I'm awake.
Why are these dreams suddenly happening and what could it mean?

If this were my dream, what I would be getting is that I was still more vulnerable to a man with his traits than I was conciously aware of.
Cops, social workers and many medical people see this time again: a woman (or man, for that matter) leaves an abusive relationship, enters a new one, and doesn't pay any attention to all the signs that in fact the new partner is all but a clone of the old! Fact is, we humans are creatures of habit, too prone to go back to what we're familiar with, not on to something better.
This could be just sort of a general warning about where you are in life; but take a good look at this new boyfriend. Is love leading you to overlook or excuse the same kind of behaviors your son's father was displaying when that relationship was new. The time to notice things like that is now, not, as you've learned, when you're deeply committed.