I adore my brother but he is really bad with money ! No sooner has he got it then it's gone. We share a car and it needs the brakes fixing, I've told him that his share will be £100 and he says that's fine but I know when it comes to it I'll end up paying the lot as in the past he always says 'you pay and I'll give you the money later' I can see this happening again and I absolutely hate having to ask for money up front. Any suggestions of how to broach ?!