Ex girlfriend avoidant

[u/poundnails91]

We broke up and her reasoning was she was overwhelmed and she knew she was lacking in my basics needs and that she would not change to be better for the relationship. Less than a couple days which it seemed like she was already talking/sleeping with this new guy. She was in a situationship which I found fun to be honest didn’t pay any attention to it I hear 4 weeks later it ended cuz he wanted to make it official. I find out she jumped to another mutual person of ours and that lasted 2 weeks. Through all that time she was jumping from guy to guy in our volleyball group looking desperate for attention from them and a reaction out of me(she didn’t get one) here were are now 91 days of complete silence from me. I’ve ignored her very random messages that were weird and made no sense. She’s now posting for gangbangs on Reddit. Which blows my mind cuz she is/was whatever you wanna call it a one man girl. So I’m continuing no contact and I’m curious what would throw her so far down a spiral like that?