"That's fine, but I'm your colleague, and I'm asking you not to call me honey."
"Well, that's just how I talk.”
How I interpreted what was meant: It doesn't matter how you feel. If I can call my wife and daughters a nickname, then I have the right to call you a nickname, even if you're telling me that you would prefer me not to. You don't get to tell me what I can or can't call you.