A lot of times, when something traumatic happens, you can have terrible nightmares like this for a long time. In this case, it may actually help to go to a counselor or therapist a few times just to talk about some of your feelings. People say that time heals all wounds, but IMO, emotional wounds can reopen again later, or creep up again for whatever reason just when we think they're gone.

I'm not a professional, but it may be that your dream represents an unconscious fear and distrust of men in general, and not necessarily any judgement on this person. I think that considering what happened before, this is a completely normal emotional response. Or, it could have some completely different meaning. Dreams are kind of strange that way. BUT the most important thing to remember when trying to figure out a dream is how you felt at the time. So because there was such strong emotion in this dream, it definitely had an important meaning. When you have very traumatic, emotional nightmares, a lot of times it is because your subconscious is trying to get you to pay attention to those feelings and issues and try to heal them.

I totally understand how you feel with these nightmares. Don't let people tell you "oh it's just a dream" -- we all know that dreams, especially non-lucids, are every bit as real as real life because our perception of reality is subjective. Therefore there is nothing wrong with being bothered by nightmares like this.

Lucid dreaming and dream control are another path that may be able to help you understand and resolve nightmares.