Roommate

Who is going to be my roommate next semester?The question keep in my mind since my semester break start. And I swear it is bothering because, uhm well yknow roommate is rumit. I dont know who I should choose. Should her or her? Will my next roommate okay with my rules? Will she okay with my jazz and orchestra stuff? (sorryy I'm old school people) Will I be happy with my new roommate? Can I trust her like I trust my previous roommate? I couldnt find any better from the old two rommates before.