Is OTHER wrong in the post ? POST : Necessary background:

I am a 17 yo guy, my ex is a 17 yo girl. We were each others' first love, dated for 11 months, broke up April 2018. We were on and off friends because I felt weird being her friend (still had feelings for her) until December 2018. She told me she regretted dumping me, and i still had feelings for her, so we went on a date. After the movie she said she wanted to be official again, so we were. A few days later, she came over to my house and we hung out. the day after, she tells me she made a  mistake and we shouldn't be dating. 

This really upset me, because I had been grieving about our breakup for months, and the one time I justifiably have hope, it gets shot down because she made a hasty decision.

She told me after this that it is probably best if I don't talk to her again. Luckily, that is exactly what I wanted. 

At the end of december, a girl who is acquaintances/ friends with my ex messaged me confessing that she thought I was physically attractive. Mid way through december I started recognizing that she was attractive as well. We went on a date on new years to get to know each other. after a few more dates we were really comfortable with each other, and things have progressed smoothly since. around mid-january, one of my closest friends tells me he's developing feelings for my ex. He wanted to make sure it wouldn't hurt me if something were to happen. i commended him for his transparency and said it was perfectly fine, although I would be careful and take things slowly considering what happened between her and I in early december.

A few days later, my ex tells me we need to talk. she calls me and we talk for roughly 40 mins about how she wants me to be friends/ on good terms with her. I tell her that's not going to happen after what she did. Being involved with her since the first breakup has done nothing but bring drama into my life. she keeps pushing and eventually asks why I don't want to be friends with her (since me telling her that having her out of my life makes things much easier wasn't enough), and I tell her I don't care about her anymore. 

5 minutes of awkward silence, and we say goodbye. 

Since then, every time I'm near her with my current gf, she makes rude gestures. I was walking with my gf in school and she covered her face from me. Yesterday when I was driving to my house with my gf (when she was walking with my close friend) she rolled her eyes at us.

The reason I find this so confusing is for 3 reasons. 1. She dumped ME. Twice. Now she's salty that I'm dating someone she associates with. 2. She literally tried to set me up with one of her other friends in the fall. Didn't progress because I wasn't feeling anything toward her. 3. She always told me, even after the second breakup "I just want you to be happy". Her actions show me she doesn't give a single shit about my happiness. 4. She's dating one of my closest friends.

&amp;#x200B;

All that being said, am I in the wrong for telling my ex I don't care about her anymore, and dating someone who's associated with her?