I'm a guy that's had a female best friend for years. I've always been pretty attracted to her but she's...

such a close friend that it's weird to even fathom ever telling her how I really feel. Somedays it seems she could care less sometimes I think,... maybe....Or is it me wanting to see what I want to see??? It's crazy because it's all I've been thinking about lately and I think it's making me insane. What is a sign that maybe she feels the same way???