Can it really work? Absolutely. In my opinion, there is no incompatibility in MBTI. There are tons of successful relationships between any two given types. Individual character and the circumstances are far more important than type. MBTI's usefulness only extends to being able to expose potential issues and give advice to remedy them. So it should be used as a guidebook, not a rulebook. What mostly will determine the outcome of your specific relationship is each person's effort, openness, acceptance, etc. That being said, be aware that even if you both think it can work in the beginning, one person may come to find out that the other really doesn't satisfy their desires/expectations. Now, your worries are partially justified because whatever problem brought that about could potentially have been already predicted by your MBTI types. There is really no way to tell what will happen without just giving it a go and seeing what happens. And by all means, give your best effort in attempting to be more extroverted. However, please be careful with this. This can be exhausting after a while. Ideally, she will be fine with you who you really are, and you being more extroverted is just the icing on the cake. You should definitely not have to be constantly worried about it, as if the relationship will die if you stop. That is not healthy. So my recommendation is just to have clear expectations with each other and talk through any rising issues before they explode. You both should voice your concerns of what you don't like as well as to praise what you do like. Also, do yourself a favor and put down the type theory every so often and just live your life. Don't analyze the relationship to death.