To some extent, the interpretation depends on whether or not you actually are pregnant. If so, then your boyfriend has a 50% chance of being right. It is more likely that your boyfriend's dream is about his desire to create a new life with you, in the sense of building your life together. The baby is a symbol of your relationship.
There is no particular significance to the dreams, and they do not predict or reveal a pregnancy. If you have had unprotected sex, a pregnancy test is the responsible course of action. The dreams only indicate that you and your girl friend are both thinking about the possibility of developing something (a relationship / a family / a future) together.
It is difficult to be certain what a man might have in mind when telling you about a dream like this. Claiming to have had a dream about you having his child is not the same as his saying that he wants you to have his child. He may be using the romantic idea of a dream as a means of manipulating you, or of suggesting that you are "meant" to be with him, or some other not quite honest ploy.
Dreams are about the dreamer. So this particular dream is not about the girlfriend but about you and your emotions surrounding sex, pregnancy and also about the girl. In a deeper sense, the baby in this dream is a metaphor representing the relationship that is growing and developing between the two of you.
it means you do not trust your girlfriend.
If you dream about having a girlfriend, it does not necessarily mean that your man is straight; it could be due to your fears of finding out that your man is not straight.
The dream probably expresses your jealousy or feeling of being inadequate to hold the girlfriend's interest.
It more than likely doesn't mean anything; a dream is just a dream. Don't hold your girlfriend accountable for something you dreamed happened.
The dream expresses your own desires and emotions. It does not predict the future and it does not reveal your girlfriend's thoughts or feelings.
that you dont like his girlfriend
This dream illustrates your own feelings about your girlfriend rather than revealing her behavior or intensions. You might suspect that she is cheating, and the dream reveals your suspicions. That does not mean that she is cheating.
maybe because you want to be with her in that moment.
That you have not yet moved on.
The dream expresses your own emotions. It does not provide any information about the guy's thoughts or feelings, or those of his girlfriend.
it is trying to show you how much you mean to her :D
It may mean you would not be averse to 3some.