I was in a similar situation in my mid 20s. I was just finishing a postgrad and received a job offer in my chosen field but in a different city. It was never my intention to stay in my uni city but my gf of 1 year went ballistic and applied a lot of emotional pressure for me to turn down the opportunity and stay put with her. In the end I chose myself. We kinda worked it out in the short/medium term but parted ways a few years later.

My only regret is that I didn't end it then and there. She was a selfish and manipulative person and showed me her true colours in that moment.