Don't be blinded by love, be aware of how much money is coming in and going out. Having open dialogue with your partner about the financial makeup of your relationship is a just one building block. If you make a decision to share your financial resources which includes debt you need to take an active role in managing those finances.
This includes things like understanding any loan agreements & keeping track of what money is being saved and spent and what money you are sharing with your partner. Sharing money or debt has many implications and this article explores these issues.