Girl's Behavior

I'm in love with a girl, but she rejects me she's not ready. But she doesn't want me to talk to other girls. What gives?

I'll try keep it brief.

This girl and I work at the same company. She's an intern and I'm a full-timer. We have a history - I helped her get the job and was there for her when ohers weren't. I cheered her up and even to show my attraction for her I had sent her a Valentine's gift and bought her a nice cheer up gift when she was stressed.

I realized I wasn't getting anywhere, perhaps close to friendzoned, so I started to give mixed signals. I said I was busy when I could've made time for her and rejected coffee requests. I started to talk to a girl to my left (they're both friends). I didn't mean to make her jealous but my other work colleagues started to joke that the girl on my left has a crush on me, which I told the girl I am really attracted to (naturally came up in the convo).

Since then the girl I like started to get jealous big time... She was out drinking with friends and then texting me how much she misses me and how I am missing out... then proceeds to tell me that I was being mean to her and not reciprocating, also throwing in there how 'hot' girl next to me is that I should ask her out. She even said the girl on my left has a boyfriend (she doesn't, not true)

Next day I ask her out to dinner and she says no. We text throughout the day like usual, then she blasts me saying I can't go for two girls at once and that's why she doesn't want dinner with me. I tell her she's the only one I want dinner with, she says that's what all guys say.

Later I take her outside of the office and confess my love for her. She keeps saying she was kidding about the whole thing, and still rejects my dinner request, later saying that I'm acting like a child, which really stabbed my heart.

She ends up texting that she's not ready for a relationship and doesn't have the same feelings. Her previous boyfriend hurt her so bad that she hasn't even thought about relationships in general period (I believe her ex-bf thing)

But what's the deal? Does she only long for my attention, or does have something for me?
I'm in love with a girl, but she rejects me she's not ready. But she doesn't want me to talk to other girls. What gives?
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