To increase your chance of living with a specific person, you can take the optional step of forming a Room Selection Group or RSG. RSGs can be formed by two students and when formed both you and your friend will receive the same selection time, making it easier to find a room together, or near each other.

If you do not form a RSG before the deadline it is very likely that you and your friend will have different selection times. That will make it difficult for you to find a room together during Room Selection Week. You will likely have to pick a room apart from each other and possibly in different residence halls.

For more info, go to https://www.bgsu.edu/housing/future-students/new-student-housing-guide/roommates.html