Is this girl into me or what?

So I recently met this girl who we had so many things in common it seemed quite impossible.It just so happens that our birthdays are just a day apart. She wants to spend the time with me. Just me...

Ok here's why I think she's into me. I cooked dinner for her once when she was sick and out of the blue she says " I wish I were a man so I could marry and treat you right". I didn't bother to ask her why at the time. My sister met her once and asked me if she was a lesbian. I told her I didn't think so and I really did not.I paid more attention to how she acted around me. She seems to get jealous of other people being around me. I wasn't certain until one day she told me to remember I was her friend not her roommates friend. All I did was talk to the girl (roomy) a few times. I was a lil confused. But the fact that she was jealous of other people around me got more obvious when I introduced her to my other friends. She was quiet and reserved even though I made extra effort to include her. She said she felt abandoned. She told me she hates not seeing me for long periods of time. She makes extra effort to spend as much time with me as she could to the extent that her bf noticed and made mention of it.

Most recently I ran into a guy when she and I were out. He stayed with us for a while. She had to leave. She did something I don't recall her ever doing before. She gave me a hug and a squeeze and a peck on the cheek.

I'm this close to asking her if she's a lesbian/or at least bi (she has a bf) or even if she has a crush on me. Should I?

Hmm this one's tricky

If it's known that you're a lesbian, & yet she's expressing any kind of emotional discomfort b/c of something you say/do with others then she's either a really petty/possessive friend in general (meaning it's not personal or b/c of you but instead b/c that's how she is period)

OR

This chick is a closet lesbian. Or she could be bisexual

She may be interested in you but the problem is...she has a boyfriend. So...you shouldn't really feel honored or get all that excited over attention from a chick whose taken unless she gets out of her relationship

I am not a lesbian. This behavior is something I have never experienced with a friend before. So it's just a lil confusing. Maybe your right and that's just the way she is... somehow I'm just not really convinced that's it. I dunno just a feeling...

I guess the only thing to do is just talk with her about it.