Open Question: What am I to her? Friend or more?

*I take her out to lunch everyday just about (since we work together).
*We flirt all the time, but we talk a lot too. We are honest with each other- except about us.
*Last friday, we were all going out and she asked me if she should invite her b/f out — which she ultimately didn’t. We were hanging out the whole night and I was driving her around.
*She put on red lipstick that night we we’re together and her b/f was not going to be there.
*She seems to be treating me very different than the guys around her.
*She hugs me for longer periods than necessary.
*She kissed my check when I took her home (and may have hovered for a second).
*She shares drinks, always drinks after I sip mine too. I don’t even smoke- she shared a cigarette.
*She’s grabbed my hand and locked on to my arms multiple times when we’ve met out.
*Took photos of us close together.
*She’s enthusiastic with me, and seems to genuinely care what I have to say.
*She gets upset when I ignore her- and she thinks its her.
*IM’s me and meets me around the office multiple times throughout the day
*Good eye contact
*Laughs at my jokes
*Hasn’t stopped me from doing things for her (like buying her lunch, drinks, etc).

We’ve had a few conversations that lead me to believe she likes me. One of them I was telling her how good I would treat her, and she said I would have been next. She doesn’t let me fully show that I’m interested in public (which makes sense), but in private I feel like I’m being tested. She seems to be initiating things, but again- I could be reading the wrong signals. Clearly- she likes being around me. She has a boyfriend (that mistreats her), and I think she really likes me now. I already told her a while back how I feel. I am really confused with her, and I don’t know what she wants from me. I’ve been doing my best to avoid the friend-zone and our co-workers seem to agree that she likes me, but I’m thrown-off by her mixed signals. I’d like to have her be my girlfriend, but it just doesn’t seem likely anytime soon.

Open Question: What am I to her? Friend or more?