<human>: So I am male, 19, and living in a dorm in college. I sadly have no dating experience, since every time I started to work up the courage to ask someone out, they got a boyfriend or I found out they already had one. I do not want that to be the problem again....

Anyway, on to my questions. There is a girl I am interested in (or I would not be here). Around the same age as me, and a sophomore as well. How do I go about talking to her? We have no classes together, no common friends, I do not party, etc. I talked with her a bit last year when we lived in the same hall, but hall socials did not happen often. She says hi to me every time we happen to pass each other, so she at least remembers me. 

Also, any idea how I catch her without her roommate with her? I feel fairly comfortable talking to her, but know I would fail pretty hard if her roommate was present also. (They are always together, I cannot remember ever seeing them apart). I do not want to be the creepy guy who has to partially stalk her to do this.

Provide a brief overview of the text.
<bot>: Have no dating experience, want to ask a girl out who I cannot find often, and her roommate is always by her side. Help?