Question for girls

25M here, want to understand the perspective of my ex (25) from girls

Here goes the story

When I was 18 and in college, this girl let's call her Aarti, was obsessed towards me, wanted to talk with me 24x7, I was not into her that time. But boy she was obsessed with me or liked talking with me, this went over for 1.5 years then one day we were talking and I dared her to get topless and she did. I guess she wanted to be in a relationship with me. But guess what, she had a boyfriend at that time and I asked her to break things off with him but she didn't.

I did not want to be the 3rd wheel, I wanted everything official but she told me she did not want to be in a relationship. It felt weird but at that time I was also emotionally bonded with her. When I told her this 3rd wheel situation is not what I want and instead of her not breaking up with her 1st bf, she went silent. This took a toll on my mental health and I was having panic attacks and had intense stress. I told her this and asked her to pause us for some time. When I came back to her, guess what, she had 3rd bf, she broken things off with me without even telling me. I was her 2nd.

Well, she did not tell me that she was with her 3rd, I got to know way later.

I genuinely loved her and wanted to move forward with marriage and all but she betrayed me. This all happened in Nov Dec 2019.

After she broken things with me, I was not ready for it and went into depression for a couple of years. That phase was insane. I was that guy who focused only on studies from 1st std and worked hard to get into NIT and wanted to progress but for her I sacrificed fee things which would have helped me to go ahead far in an accelerated manner but she did not care for this.

This 3rd guy, she gave him blowjobs and what now within one month of knowing him. Anyways, what I got to know later is that her 3rd ex used her sexually and broken off with her saying our caste doesn't match. She gone mad and cried over him. When I heard this, it felt weird as I was ready to anything for her and here she is cryung over some guy who used her sexually on the basis of false promise of marriage.

Anyways, from 2022 onwards we started talking again and I told her this time I still like you but she told me she did not love me. But eventually we got physical for the first time, earlier we used to do some things on video call but in 2024 we met and did things. Anyways, when I told her as we are getting physical, do you love me or will you marry me? She denied.

Then in the late 2024, she got a job where she met a guy, she got physical with him within a month and was giving blowjobs. Crazy, and this 4th guy, he told her I enjoy getting physical with you but I like someone else so I can't marry you.

Crazy, two guys she liked and they both used her sexually and left her. The thing is, I genuinely cared about her but she is hesistant to have sex with me and here she meets some random guys and starts giving blowjobs and getting swallowing çum and god know what wlse she did with them.

Right now, she has blocked me from everywhere and I have moved on but still can't understand why this girl want to whore around like this.

Any perspective from girls would be helpful.