Tucking hair behind ear, is this another good sign?

I've had a gut feeling that this girl has liked me for a while. I catch her staring at me and we look at each other for more than just friends would look at each others eyes. She finds me extremely funny and I feel like a comedian around her also.

She has a boyfriend though so it's kinda weird what her intentions are.

Today she was with her boyfriend and me hanging out, and she knows I've been looking for work. She was looking at me and said that the place she's working at is hiring and if I was interested she could talk to someone. While she was saying that she was tucking her hair behind her ear. Normally I wouldn't think much about tucking hair behind ears, but she didn't just tuck it and get it over with, it's like she was stroking/playing with it, running it behind her ear several times, so that's what got me wondering.

What should I do? I find myself liking her more the more we hang out and the more she subtly flirts with me.. maybe its in my head? She has a boyfriend but that doesn't mean much she could be unhappy and looking for someone else..or maybe she's messing with me I don't know...what should I do
Tucking hair behind ear, is this another good sign?
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