Declaring war on Allies

So I am in a 100 game right now and I am allies with all the powers in Asia that are in a coalition and I am not in it, I am trying to send my troops to help one of my allies borders but I have to go through there territories to get there and ever time I reach the center of one it declares are and takes their province?? I do not know what is going on but I can't even move my troops to help an ally,

Yes me and him have shared map.

Edit: It is not happening anymore but it may still happen, idk but what I said above did happen.