Hated you for a while

When I first met you, my life changed forever. I felt like I had found someone who truly understood me, and I was delighted to have you in my life. However, our first encounter was not a pleasant one. We both seemed to judge each other harshly, and it seemed like we would never get along. But despite that, I couldn't help but fall deeply in love with you.

I gave you my heart, but you broke it into a million pieces. It was as if you had intentionally set out to hurt me. I was devastated and felt like I had lost everything. I never thought that you, of all people, could be the one to break my heart.

After that, I made some promises to myself. I promised to never fall for anyone else again, never trust anyone, and focus solely on myself and my career. I also promised myself I would never let you back into my life.
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But,
Is it fair to say that promises are sometimes not fulfilled despite one's best intentions?
What do you think??
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This is my first story, and English isn't my language, so I apologise for any grammatical errors. "Thanks to my dearest friend for helping me."