Ok, I'm a girl if that helps

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Im sorry to hear she denied you. Don't suggest you ask her out again though. Because you will more or less be hurt again seeing as she already has a boyfriend. I think you should become her friend. Be nice, and funny. Become her friend first, and then see how things go. Then you might be able to get more of an insight into her relationship, so that you will know if she and him are no longer together.
I hope your going to be ok! Good Luck Darl,
you're welcome to PM me if you need to
xox