Need advice from mature adults, please. I am a woman in love with my female friend?

Iam a 30 yr old woman who is very much in love with my female friend who I have known for 2 years. We have only gotten close in the last 4 months or so. We have discussed orientation and she has admitted to kissing girls before but I am not sure how long ago it was, and she does not claim to be bi. I know without a doubt that I AM bi, if not a complete , although literally nobody knows this about me and I have always pretended to like men. (Very sad, I know, for being 30 years old) I have had crushes on women since I was a little girl, and I love this friend of mine more than I have ever loved any other person. She means so much to me, and I am very protective of her. She seems to like that I am, and our relationship seems to be getting progressivly more where she comes to me for comfort and love/support, and I am always there. She tells me constantly how much I mean to her, and we are very physically affectionate too. I know how women (heteroual ones) are (cont. below)