Here are a few things you should think about that will help you determine how compatible the two of you really are:
1. If you want to know the answer to something the best thing to do is to ask. Talk with, not at, your boyfriend and ask questions about his values. Don't make this seem like some sort of interrogation, but rather a normal adult conversation. Listen carefully to his answers and don't tell him he's wrong or give any indication that you don't agree with something he says. No matter how badly you want things to work out you're better off facing the truth instead of trying to get him to say what you want him to say.
2. Do the two of you share similar views on how best to raise your kids, assuming you want to have kids? Again, this may sound fairly insignificant, but it's not. The last thing you want to do is find out that you are completely opposite in what approach you think is best when it comes to child rearing.
3. What about money? Do you have congruent beliefs about how best to use your money and how and when you should use credit? Finances are one of the biggest things couples clash over.
4. Do you both agree on how money should be divided in a marriage? Should you each have your own account and just pool money for the household bills and savings or do you pool all your money? Who is responsible for the bills, will you do them together or do you think one person should be in charge of all household finances?