It could be straight wish fulfillment, but it could also be more complicated depending on what else is going on. Yes, the dream seems to want to continue this particular relationship further than it seems to be able to go, but it also shows signs that you may be wanting a change in general. The fact that you are with his friends and your center has shifted to something new may be a longing you have that is more than just about one relationship. Just a guess. I would need to know more.