What's in a name?

Tom was invited to his friend’s house for dinner. He found that his buddy called his wife every cute name in the book: honey, darling, sweetheart, pumpkin, and baby.
When she was in the kitchen, he leaned over to his friend and said, “I think it’s nice you still call your wife all those pet names.”
“To tell you the truth,” his friend said, “I forgot her name abut three years ago.”