my roomie and i talked for awhile online and got ot know some stuff about each other. then we played a questions game lol she asked me a roomie type question and i answered it and then i asked her one. we started off with your typical 'neat/messy?' and then as we talked more and more we got into whether we minded having friends, what we could do about bfs, and stuff like that. Starting out openly like that seems like a good way to begin, but just take it gradually
