I'm starting to hate my best friend
Best friend (24F) and I (25 m) we've been friends for about 20 years now, but lately I started to notice that teenage things are coming back, and I think I want to end the friendship...
For a few months now, she cancels plans at the last minute, acting rude when speaks to me, never apologized for anything and even shows up at my door unannounced when I don't answer her calls or tell her I'm not in the mood for a hangout (one of those times, with a co-worker I didn't know), she borrows my stuff without permission a couple times and then acts offended when it piss me off.
I talked it over with my therapist and was ready to end things, and the next day she calls saying she'd found a new therapist and felt fantastic, talked about her dad's traumas and how much she loved me, but in the end, her attitudes haven't changed, and I'm starting to feel disappointed over and over and over again I just feel like I don't want to see her anymore and I can't without feeling uncomfortable, no amount of conversation with her hasn't changed anything.
We've been friends for almost our entire lifes and it makes me very very sad, any advice? ):