It is also important to remember that even if you have known your roommate for a long time, knowing someone and living with them are not the same thing. If you are new to the college experience, you will both undergo changes as you learn more about yourselves and meet new people from different backgrounds. Keeping the lines of communication open will be vital as you may need to make adjustments to the ground rules as you each grow and change. The most important thing you can do with your new roommate is to spend an hour or so in the first couple of days talking to each other. When you check in, or at your first building or floor meeting, your Resident Assistant will be able to give you some advice and an outline of things you should discuss with your roommate that will help you avoid problems later.
All relationships require a little give and take now and then.
It is probably unrealistic to expect your roommate to have all the same goals, values, and ideas as you. After all, college is about learning about and from new perspectives. Remember, it is possible to disagree without being disagreeable.