When someone says my name with the correct pronunciation and accent 😳 how do they know my true name

This is why, as a native English speaker, I just never express my emotions.

Similar here, my partner and I are mostly talking in English for non-important/silly stuff and switch to French when things said are serious/important. A way to separate real/serious from joking/sarcasm.

You jest, sir, but this is the reason I purposefully got a British therapist instead of using my native language in therapy.

English is my native language. I’m reasonably fluent in some parts of life in French but I feel like if I were to try to have a deeper conversation about something like emotions I would struggle to find the right words. Is that kind of what makes it easier for you non-native speakers that are identifying with this post?