You don't say where in the world you are. I guess the USA as you use the word "outlet" not "socket".
Wiring system are very different in different countries.
You say that the breaker in the bedroom trips when load is taken in the living room. Are you saying that the loads in the living room continue to work?
If so, it sounds like the bedroom breaker is a GFI or combined overcurrent/GFI breaker. (RCD in England). I also think that the neutrals are shared or are connected together or to earth.
The load connected to a GFI must have line and neutral go though the GFI. There can be no path to ground, or to any other neutral, from the power conductors of any load that is protected by the GFI. You might need to feed a separate neutral for the bedroom, or rearrange how the GFIs are connected.