First of all, a dream by itself can't tell you whether or not you should or shouldn't try to get back with someone.
A dream can help you explore your feelings toward that person and make you face things that you knew and felt about them that you didn't want to admit to yourself.
You can use that information to help you decide what to do but you have to make your own choices.
Now, can you please clarify, because it wasn't clear from your post: Do you mean that you broke up with him two weeks ago, but you were with him for a long time before? Because the way you wrote it, it could also mean that you only had a relationship for two weeks, so I just want to make sure?
Now, why would you think he is lying when he says he doesn't love you as much. If he loved you, why would he say something hurtful like that to you?
I think the lunatic girl in the dream can represent a part of your friend's personality that engages in negative, self-destructive behavior or thinking. Kiling the girl could represent changing to positive thoughts and behaviors and so moving on to something postive in her life.
Since you arend your friend are going through similar things, it's possible that your friend in the dream represents you in waking life, and it is you that has to get over negative thoughts and behaviors.
In general, in dreams
death often has to do with moving on to a new phase in life.
Since your friend miscarried in waking life, I think that you just carried that over into the dream as part of your friend being hurt.
However, the unborn baby can also represent the potential for something new, so it could mean that either you are sad that your relationship ended, because it might have gotten better if you worked at it.
On the other hand, it could also mean that if you stayed in the relationship, you would be restricting yourself and preventing yourself from developing and growing.
The part where you see your ex and the feelings that you feel probably reflect how you feel in waking life.
I think the part about your friend being in a coma has to do with your worries about being emotionally stuck in a rut because you can't get over him. The dream is telling you that you have to do something one way or another.
I think you need to look back at your relationship and why you broke up. Do you think that if you got back with him, it would help you to grow and develop as an individual, or if it would restrict you from growing?