@Vinjara,
Also, from personal experience, it can be a really positive experience to have a deep and meaningful opposite sex friendship. In your case, just because she's a girl, doesn't mean you need to be in a relationship with her. My best friend is female, she's very attractive, and has many qualities that I would probably look for in a partner. BUT, we are friends. We are both married, we have boundaries, and we have a deep mutual respect for each other.
It IS okay to just be friends with a member of the opposite sex (or same sex if you're gay), it doesn't have to progress onto a deeper relationship.