Thats a crappy situation, the only thing to do is be brutally honest with him. Ive got the greatest hunting partner in the world, we split the cost of everything, from the wall tent to the trailer and everything that goes along with it all the way down to our video camera, if he needs it he takes it and vise versa. If one of us breaks something we fix it or replace it, no arguements, its been working great. Youve got to have the same burning desire and motivation as eachother to make it work also, I hope to never break ties with my hunting partner, it works perfectly.