Why did Tina call Matt Helm 'Eric'?
When we first meet the Tina character, she has just saved Matt Helm from the female assassin by shooting her twice. Her first words are, "It's been a long while, Eric." Matt Helm instantly recognizes her, and calls her "Tina." He doesn't seem to react to having been called Eric instead of Matt.
What is the reason she would have called him Eric if they apparently knew each other, and must have known each other's name?