Because people like that tend to stay on your mind for a while because of something they did or said or just because you kinda miss them. This will usually last until you find someone else.
The question is not entirely clear. A dream about HAVING the ex boyfriend's baby would be different from dreaming about a baby the ex boyfriend had by someone else.
This dream suggests that the dreamer remains emotionally attached to the ex-boyfriend and is projecting her own emotional distress onto him. The dream does not reveal any accurate information about the ex-boyfriend's thoughts or feelings.
This might be a wish-fulfillment dream, particularly if the dreamer wants to re-establish a relationship with the ex boyfriend. The dream expresses the dreamer's emotions and provides no information about the ex boyfriend's feelings.
This dream suggests that the current relationship with your boyfriend might be drawing to a close. In dreams, "death" usually symbolizes the end of something and the beginning of something new.
This dream suggests that the dreamer continues to hold an emotional attachment with the ex boyfriend.
It is normal to dream about what is on one's mind. So if there are lingering feelings for the ex boyfriend, the dreams are reflections of those feelings. The dreams do not reveal anything about the ex boyfriend's feelings.
This dream could suggest that there is something in the ex boyfriend's past that needs "washed" or "cleaned up."
The dream does not provide any information from your ex-boyfriend's mother or about your ex boyfriend's emotions or behavior. The dream is a product of your own imagination, and reflects your own hope that your boyfriend misses you.
The dream reflects the dreamer's frustration with the ex boyfriend; it provides no information about the ex's feelings.
This might be a wish-fulfillment dream, assuming the dreamer still has lingering attachments to the ex boyfriend. More importantly, this dream is all about the dreamer's emotions and reveals nothing about the ex boyfriend's feelings. The dream does not predict anything in the future.
The ex-boyfriends in this dream symbolize factors from your past. The dream might be about picking up classes or a job or plans that were dropped around the time that you were with these ex-boyfriends.
It doesn't mean that your boyfriend will leave you for his ex... He cant control what you dream about, so dont punish him. What it does mean is that you are feeling a little insecure about the relationship and threatened by your boyfriends ex. Just remember that it was only a dream and that he is with you for a reason, enjoy your relationship...