I guess you are feeling threatened and a good approach might be to tell him exactly that, that you are feeling threatened without making any accusations and see if he can be sensitive to your feelings. His response will be important in determining how you should handle this situation. If he is understanding, then you can communicate directly and probably resolve this issue. If he doesn't want to talk about it, try to find out why. This is a common feeling but the way you handle it will determine the direction your relationship takes.
Relationships always seem to involve some compromise between giving and getting.
Sometimes we are in relationships with people who just don't give enough. Sometimes we are the ones that aren't giving enough and often it is both. My advice is to give as much as you can and let it be known that you would like something in return. Expect to give more than you get but if the return is still too low, be prepared to make some changes. My boyfriend says he is emotionally ready to get married, but not financially.