If your having doubts after such a short time, is it really worth while pursuing this relationship. Relationships are a partnership and require input and work from all parties concerned. Divorce is not everything, It took me 9 years to get mine but my partner and I stayed together and are stiil together after 13 years. marraige is on the cards but money is the problem and we have both talked about this and are prepared to wait.
If he is not prepared to sit down and discuss what ever it is that is affecting your relationship then your wasting your time. He may be a nice guy but thats not what a relationship is based upon.
Good luck