Have you met his family? Talked about his goals for the future? If he's not willing to commit past next Saturday's date, then now isn't the time to talk about going the distance...unless you're ready to face the fact that he's probably not ready and will be scared away. Then make sure that the relationship changes that you're proposing are realistic. If you've been seeing each other casually and non-exclusively for three months, then it's probably a stretch to assume you'll move in together in the next few months. A more realistic next step might be dating exclusively. If it's been a year or so of committed partnership, then that's a more realistic scenario for taking things to the next level. Keep things cool and low pressure so that your guy is amenable to whatever it is you need to discuss.