During the interview, she gave various glimpses into her private life, while she also shared a sweet detail about her husband.
Meghan said the nickname came back when they had to keep their relationship a secret.
She revealed: "Probably at the beginning of us dating, when everything was in code.
"People didn't know we were dating for - talk about memory lane - so long ago."
She added: "I couldn't tell anyone who I was dating, and who was keeping [the secret]," .
"So I think we were just on a letter basis."
Meghan said that the couple ended up keeping their "coded" nicknames, adding: "I like it. I love nicknames."
