Yep. So do yourself a favor when you realize this. Quit wasting your energy on someone who will not be accountable for their own repeated self chosen actions. Send them love and keep moving forward. It's not cruelty, it's self-love. And you deserve it.
My best friend's Mother said that, "If you believe you have more friends than you can count on your hand, you are deluding yourself". Now that I am older and see who has stuck with me as a friend from my popular teen/early years, it is indeed around 5 ;)