I've known a girl for a few years now we've gotten close. We see each other every day, we're both single, but i was never attracted to her b/c there used to be someone else on my mind. When we run together or talk everything is comfortable but when it's time to leave there's a strange awkwardness that passes between us. I can't figure it out - she gets this funny smile that makes me think she would like to take things further, but she's sorta shy. Mutual friends like her and have asked if we're together. How can I figure out if she's into me without blowing our friendship and working relationship?