My brother and girlfriend are dead.
I'm very sorry to hear that. Do you have anyone important in your life?
I still have my little brother and my mother.
It's good that you still have them in your life. Grieving is different for everybody but it is good to talk to somebody when you lose someone important to you. It might help you process your grief.
We are all trying to support each other as we deal with this.
That's great that you are all helping each other out. I'm sure it's helpful for all of you and they appreciate you being there for them. Stick together and you will be able to get through this hard time.