American, my family only speaks English, but my teacher was talking about India’s 22 official languages and how they vary by region. He also talked about English kind of uniting them and being the common language for communication and how this couple had a man and a woman from different regions who both spoke English.
I know a couple who speak French and Spanish, and English is the majority language here. They speak and reply to each other in their own language. It’s amazing and I love it.