I'm attracted to a girl I manage at work
Why are you attracted to her?
I'm attracted to her because of her extremely cheerful character, she always gets my day started with a smile on my face.
I can hear you, but it is wrong and unprofessional to be attracted to your co-workers. You should try to find a partner outside of work, since otherwise it might badly affect the job both of you are doing.
It's okay as long as she is fine with it and we are two consenting adults.
You both are fine with it but probably your employer won't be happy having affair at workplace. These kind of relationships can make things complicated and affect your job performance so you should keep your feelings in check and find someone outside to date to.