Back into a depressed state of mind :(

My bestfriend of 6 years burn pictures of me and her and posted it on sc and i asked her why she did that amd she said "obviously you dint get the hint ion wanna associate with you anymore lmao" it really came out of nowhere i didnt see it coming And im really hurt cause shes taking it as a joke and being inconsiderate to my feelings , my heart hurts i feel betrayed and lonely what do i do? She said that shes been wanting to call it off for awhile now, but if it were true why wouldnt she tell me sooner ? Do you think she was using me ? And why couldnt she be straight up with me and tell me instead of dropping "hints"?