Now, he has returned to his true home country in America.
All questions are welcome such as to how to change oil, to how to tie shoes.
It is possible that he is telling you the truth about the term that he is using for this person.
Mami rose to prominence in the 2010s in mainstream culture.
Give him an opportunity to share himself with you as well.
Make a decision about what you want for the future of this relationship.