it would be cool to have a teamate while in battle besides one that just follows you 3ft behined kinda like borderlands.

The game is confirmed to be single player. Use http://www.gamesas.com/?showtopic=976152.

I think Fallout should remain a single player game. With co-op the two of you will always have to stay in the same cell until both parties leave, or you get Borderlands' "once someone activates the door you are all forced out of the cell". Single player makes the game more free and it won't wreck the story.

So I say no to co-op.

I wouldn't trust any of my circle of friends to not gun down someone I want to keep alive and piss off the wrong people.
It would end up with both of us running from a mob.
"Why'd you shoot all those people???"
"They were looking at me, dangit! They had it coming!"

Co-op and multiplayer discussion belongs in http://www.gamesas.com/?showtopic=976152 please.