This statement suggests that the speaker has begun to integrate English, specifically American English, into their subconscious thoughts and dreams. It implies a level of immersion where language use extends beyond conscious communication to encompass internal thought processes.
On a deeper level, this quote reflects the impact of cultural assimilation and the subtle ways in which different cultures can influence an individual's psyche. When someone starts dreaming in another language, it signifies that they have not only learned the language but also embraced aspects of the associated culture, making it a part of their identity. It is a profound testament to how deeply one has been immersed in a new cultural environment and how seamlessly that environment now shapes personal experiences.
Tom Ellis is an English actor best known for his role as Lucifer Morningstar on the television series "Lucifer," which aired from 2016 to 2023. His comment likely stems from this long-term engagement with American culture through both his work in Hollywood and his interactions with American fans and colleagues, highlighting how profoundly such experiences can alter one's internal world.