Does she know he's asking you all this? I can kind of see PP point, I think it is great he can come to you for advice, but if he is doing it behind her back (this conclusion only because you don't know the amount...), kind of seems a weird way to start a life together. I think if it is serious enough that he wants to marry her, stuff like this should be on the table already, then they can both get your advice. Personally, I'd be irate if someone discussed my personal finances without telling/asking me first, regardless of the relationship he/she has with the person being told. Just my thoughts