TIFU by ditching my grieving mother for my now ex girlfriend

So this happened on December 31st 2023. I (M 20) flew about 500 miles to meet my girlfriend for the first time ever. I was saving up for that flight for a while. And had introduced her to my brother and his wife as we both saw a future in each other and she wanted to get closer to my family.

We were a long distance couple and met in a video game and had been together for about 4 years but never met in real life.

So anyway, I lied to my strict af parents that I have a game coming up in a nearby city and I will be staying there for a few days.

On December 30th's night, mom gets a call that her sister passed away, she was grieving really bad. I had an early flight next morning. I felt really bad leaving her in that state to meet my girlfriend but I did wait four years for this day.

Anyway, we spent December 31st to January 4th together. We did all the couple stuff we had dreaded to do for years. Laughed, danced, cut a cake, ate, slept, cried and whatnot. I felt alive, happy, I cried when I realised my trip was coming to an end.

All was good when I came back home, though the guilt of leaving my mother was eating me alive. She was doing better now.

A month goes by, my personal life became kind of a mess, i had massive arguments with dad and then on Feb 12th my girlfriend texted me that she needs a break. She told me that I didn't put enough efforts.

On Feb 22nd, we had a long talk on call, it was ugly, I cried, begged, but ultimately nothing worked. She dumped me. She told me she didn't love me anymore, that she fell in love with her boy best friend.

Since then, I've felt like I died every single day. To introduce someone to your family, planning your life out, dreaming of a future, ditching your grieving mother for that person, and then she just dumps you, out of the blue.

TL;DR: I left my grieving mother to meet my long distance girlfriend and she dumped me the very next month.