What's up with her?

My ex broke up with me after a stupid fight about 4 months ago, i tried to fix things up but it was impossible.

She went back with her ex a couple of weeks later, but she was still texting me and posting stuff about me and gifts that i gave to her on Instagram, i was hurt, so i didn't react the way she expected... I was ice cold with her.
She blocked me the day before my birthday, and a friend of her told me that she was hurt BC i didn't fight for her.

I love her and sometimes i feel like i should text her... But i know that i did the right thing moving forward, but i still can't understand what's happening with her.

Sorry for my grammar.
Not native.
What's up with her?
Add Opinion