I'm a girl who's in love with my girl best friend for almost 8 years

we've been good friends since high school.. that's when I realized I was falling for her.. we do everything together! I even treat her as my girlfriend but she never asked, clarified or even complained about my actions! I told her how I felt when we were in our freshman year in college.. she hated me for that and have not spoken until junior year.. we were close friends again, I fell for her all over again.. senior year, this guy shows up and became her boyfriend.. it drove me insane seeing them together! I ended up telling her that I still have feelings for her after all these years.. but then turns out they broke up and now she's asking for my advice.. I honestly don't know what to say.. I want to forget her but she still treats me as her best friend.. WHAT DO I DO??

It sounds like the two of you have different ideas on what your relationship (or lack of one) is about. She likely does consider you her best friend but I don't think that's the answer you want to hear. If she's asking for your advice, that's probably the best opening you'll ever get to find out what her real feelings are. I'd explain everything you've written in this question and ask for her advice like: "What should I do? Is there any hope for me to hold on to this dream?"

Listen closely to what she says. After eight years and the previous experiences you've had, she has to have a definite answer to that question.