What would you name this feeling?

I am female and have never really been into girls before. I have had the odd crush on a teacher but thats normal right?

Anyway there is this girl at work who totally catches my eye. I wouldnt say she is like Gorgous but she is the most beautiful person I have ever seen! I have known her for almost two years and didnt really start feeling like this until around 2 months ago. We have quite a good friendship I feel, however we werent the greatest of friends when we first met! When I see her which is four times a week for around 1 -2 hours we get on amazingly. Talking, indirectly flirting and just having a laugh! We were on her own and another friend of hers who I dont really know walked into the room we were in at work and started talking to her, they were talking for about 5 minutes when my friend included me into the conversation by saying ohh Juliet loves that dont u Juliet, and started flirtatiously taking the mick. she gives me great advice about anything I need help with and really does genuinely care!

I really cant get her out of my head! I said I would help her with some coursework for her year13 class becuase she was meant to make something and she didnt so I made this amazing design and let her take the credit. although she wouldnt accept it and told the class I did it, I didnt need to go that far to help her but i felt like i wanted to, I find myself wishing i was around her or that i could see her just for a few minutes becuase she is so amazing, when im not with her im thinking about her.

What would you call this?

How do i feel?

Is this normal?

Forgot to mention, We are both in relationships however she doesnt really mention her partner much I I dont know if they are male or female. However I am dating a male!