Does my bestfriend like me?

i have this best friend who ive been getting mixed signals. she is talking to someone (kind of) she asks me on a "date" but invites someone else, she flirts, i see her stare at me alot, when were alone she is quiet around other ppl shes completely different. i was in a realtionship and about 3 or 4 days ago i oovoo chatted with her and she out of the blue asked me "whould your bf get mad if i took you away from him" then"just out of curiosity " i answered i dont think so but then she goes "ask him" if its just of out curiosity then why do i have to ask him? and where did this come from? today i went to pick her up from her house to take her to school she came out a few mins late it seems for no reason just a shirt, jeans, ugg boots her hair was tied up but i noticed she was wearing the ring i gave her im so lost help please!!!!! shr asked me on a date first but then asked my other friend in front of me to come along too so im lost on what her intentions were