Romantic relationships, like many things in life, are about learning to love and accept a full person with all their wonderful features and the quirks that make them who they are. The spirit of any long-term relationship should be one of compromise and collaboration as you each journey toward deeper goals together.
A relationship counselor may suggest coping strategies to help you more readily accept your partner's idiosyncrasies. For example, an .editorconfig file and appropriate editor plugins would let each of you work using your favorite style but commit to your shared repo using a standard format.
You may even choose the help of a completely neutral third-party, and have Jenkins run a code beautifier after every commit so nobody is forced to commit code that doesn't meet their stylistic preferences.
Ultimately, a healthy relationship is built on trust, communication, and compromise. I wish you luck on your journey together.
You're going to need it if you indent with spaces. 🙄